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Lightning from a thunderstorm strikes amid the wreckage of twisted cars and structures at Plaza Elementary School, where seven children were killed earlier in the week when a tornado hit Moore, Okla., Thursday, May 23, 2013. The huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying the elementary school with a direct blow as children and teachers huddled against winds up to 200 mph. (AP PhotoBrennan Linsley)
Lightning from a thunderstorm strikes amid the wreckage of twisted cars and structures at Plaza Elementary School, where seven children were killed earlier in the week when a tornado hit Moore, Okla., Thursday, May 23, 2013. The huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying the elementary school with a direct blow as children and teachers huddled against winds up to 200 mph. (AP Photo/Brennan Linsley)
An old car sits wrecked tornado debris Thursday, May 23, 2013, in Moore, Okla. Cleanup continues three days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP PhotoCharlie Riedel)
An old car sits wrecked tornado debris Thursday, May 23, 2013, in Moore, Okla. Cleanup continues three days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP Photo/Charlie Riedel)
This undated photo provided by Marvin Dixon shows his grandson Kyle Davis. Davis was killed when a tornado struck Plaza Towers Elementary School in Moore, Okla., on May 20, 2013. Nicknamed The Wall, 8-year-old Davis loved soccer and going to the Monster Truck exhibitions at the fairgrounds with his grandfather. (AP PhotoMarvin Dixon)
This undated photo provided by Marvin Dixon shows his grandson Kyle Davis. Davis was killed when a tornado struck Plaza Towers Elementary School in Moore, Okla., on May 20, 2013. Nicknamed "The Wall," 8-year-old Davis loved soccer and going to the Monster Truck exhibitions at the fairgrounds with his grandfather. (AP Photo/Marvin Dixon)
This undated handout photo provided by the Legg family shows Christopher Legg. Christopher was killed when a tornado struck Plaza Towers Elementary School in Moore, Okla., on May 20, 2013. (AP PhotoCourtesy of the Legg Family)
This undated handout photo provided by the Legg family shows Christopher Legg. Christopher was killed when a tornado struck Plaza Towers Elementary School in Moore, Okla., on May 20, 2013. (AP Photo/Courtesy of the Legg Family)
Monty Montgomery walks among rubble as he prepares to clean up a friends tornado-ravaged home Thursday, May 23, 2013, in Moore, Okla. Cleanup continues three days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP PhotoCharlie Riedel)
Monty Montgomery walks among rubble as he prepares to clean up a friend's tornado-ravaged home Thursday, May 23, 2013, in Moore, Okla. Cleanup continues three days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP Photo/Charlie Riedel)
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Debris is strewn about amid the wreckage Plaza Towers Elementary, where seven children were killed earlier in the week when a tornado hit Moore, Okla., Thursday, May 23, 2013. The huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying the elementary school with a direct blow as children and teachers huddled against winds up to 200 mph. (AP PhotoBrennan Linsley)
Debris is strewn about amid the wreckage Plaza Towers Elementary, where seven children were killed earlier in the week when a tornado hit Moore, Okla., Thursday, May 23, 2013. The huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying the elementary school with a direct blow as children and teachers huddled against winds up to 200 mph. (AP Photo/Brennan Linsley)
A stuffed pink unicorn is tangled amid the wreckage of Plaza Towers Elementary, where seven children were killed earlier in the week when a tornado hit Moore, Okla., Thursday, May 23, 2013. The huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying the elementary school with a direct blow as children and teachers huddled against winds up to 200 mph. (AP PhotoBrennan Linsley)
A stuffed pink unicorn is tangled amid the wreckage of Plaza Towers Elementary, where seven children were killed earlier in the week when a tornado hit Moore, Okla., Thursday, May 23, 2013. The huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying the elementary school with a direct blow as children and teachers huddled against winds up to 200 mph. (AP Photo/Brennan Linsley)
Destroyed vehicles and more debris from Mondays tornado are piled in front of the IMAX theatre in Moore, Oklahoma, Thursday, May 23, 2013. (AP PhotoTony Gutierrez)
Destroyed vehicles and more debris from Monday's tornado are piled in front of the IMAX theatre in Moore, Oklahoma, Thursday, May 23, 2013. (AP Photo/Tony Gutierrez)
This undated handout photo provided by Landon Mcneill shows Sydney Angle. Sydney was killed when a tornado struck Plaza Towers Elementary School in Moore, Okla. on May 20, 2013.(AP PhotoCourtesy of Landon Mcneill)
This undated handout photo provided by Landon Mcneill shows Sydney Angle. Sydney was killed when a tornado struck Plaza Towers Elementary School in Moore, Okla. on May 20, 2013.(AP Photo/Courtesy of Landon Mcneill)
Part of a wall remains standing amid the wreckage of Plaza Towers Elementary School, where seven children were killed earlier in the week when a tornado hit Moore, Okla., Thursday, May 23, 2013. The huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying the elementary school with a direct blow as children and teachers huddled against winds up to 200 mph. (AP PhotoBrennan Linsley)
Part of a wall remains standing amid the wreckage of Plaza Towers Elementary School, where seven children were killed earlier in the week when a tornado hit Moore, Okla., Thursday, May 23, 2013. The huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying the elementary school with a direct blow as children and teachers huddled against winds up to 200 mph. (AP Photo/Brennan Linsley)
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Rain falls on the wreckage of Plaza Elementary School, where seven children were killed earlier in the week when a tornado hit Moore, Okla., Thursday, May 23, 2013. The huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying the elementary school with a direct blow as children and teachers huddled against winds up to 200 mph. (AP PhotoBrennan Linsley)
Rain falls on the wreckage of Plaza Elementary School, where seven children were killed earlier in the week when a tornado hit Moore, Okla., Thursday, May 23, 2013. The huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying the elementary school with a direct blow as children and teachers huddled against winds up to 200 mph. (AP Photo/Brennan Linsley)
Debris is strewn about amid the wreckage Plaza Towers Elementary, where seven children were killed earlier in the week when a tornado hit Moore, Okla., Thursday, May 23, 2013. The huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying the elementary school with a direct blow as children and teachers huddled against winds up to 200 mph. (AP PhotoBrennan Linsley)
Debris is strewn about amid the wreckage Plaza Towers Elementary, where seven children were killed earlier in the week when a tornado hit Moore, Okla., Thursday, May 23, 2013. The huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying the elementary school with a direct blow as children and teachers huddled against winds up to 200 mph. (AP Photo/Brennan Linsley)
Residents cleaning up their their tornado-ravaged home take a break to share a prayer with a roving chaplain Thursday, May 23, 2013, in Moore, Okla. Cleanup continues three days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP PhotoCharlie Riedel)
Residents cleaning up their their tornado-ravaged home take a break to share a prayer with a roving chaplain Thursday, May 23, 2013, in Moore, Okla. Cleanup continues three days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP Photo/Charlie Riedel)
Carol Kawaykla pauses while looking for items in her tornado-ravaged home Thursday, May 23, 2013, in Moore, Okla. Cleanup continues three days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP PhotoCharlie Riedel)
Carol Kawaykla pauses while looking for items in her tornado-ravaged home Thursday, May 23, 2013, in Moore, Okla. Cleanup continues three days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP Photo/Charlie Riedel)
Lynne Holman tosses debris while helping clean up her boyfriends tornado-ravaged home Thursday, May 23, 2013, in Moore, Okla. Cleanup continues three days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP PhotoCharlie Riedel)
Lynne Holman tosses debris while helping clean up her boyfriend's tornado-ravaged home Thursday, May 23, 2013, in Moore, Okla. Cleanup continues three days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP Photo/Charlie Riedel)
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Dawn Ice look for items to salvage as she helps a friend clean up at his tornado-ravaged home Thursday, May 23, 2013, in Moore, Okla. Cleanup continues three days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP PhotoCharlie Riedel)
Dawn Ice look for items to salvage as she helps a friend clean up at his tornado-ravaged home Thursday, May 23, 2013, in Moore, Okla. Cleanup continues three days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP Photo/Charlie Riedel)
LaTisha Garcia wipes a tear from her eye in front of her demolished home as she talks about carrying her injured daughter following Mondays tornado in Moore, Okla., Thursday, May 23, 2013. (AP PhotoSue Ogrocki)
LaTisha Garcia wipes a tear from her eye in front of her demolished home as she talks about carrying her injured daughter following Monday's tornado in Moore, Okla., Thursday, May 23, 2013. (AP Photo/Sue Ogrocki)
Jazmin Rodriguez, left, looks up at her mother, LaTisha Garcia, right, following an interview in Moore, Okla., Thursday, May 23, 2013. Garcia carried her injured daughter away from a school that was hit by a tornado on Monday. (AP PhotoSue Ogrocki)
Jazmin Rodriguez, left, looks up at her mother, LaTisha Garcia, right, following an interview in Moore, Okla., Thursday, May 23, 2013. Garcia carried her injured daughter away from a school that was hit by a tornado on Monday. (AP Photo/Sue Ogrocki)
LaTisha Garcia finds her sons favorite truck as she digs through the rubble of her tornado demolished home following Mondays tornado in Moore, Okla., Thursday, May 23, 2013. Garcia carried her injured daughter away from a school that was hit by a tornado on Monday. (AP PhotoSue Ogrocki)
LaTisha Garcia finds her son's favorite truck as she digs through the rubble of her tornado demolished home following Monday's tornado in Moore, Okla., Thursday, May 23, 2013. Garcia carried her injured daughter away from a school that was hit by a tornado on Monday. (AP Photo/Sue Ogrocki)
An American flag flies in a tree in a neighborhood destroyed by Mondays tornado in Moore, Okla., Thuursday, May 23, 2013. (AP PhotoSue Ogrocki)
An American flag flies in a tree in a neighborhood destroyed by Monday's tornado in Moore, Okla., Thuursday, May 23, 2013. (AP Photo/Sue Ogrocki)
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A battered sign stands outside the wreckage of Plaza Towers Elementary School, where seven children were killed earlier in the week when a tornado hit Moore, Okla., Thursday, May 23, 2013. Cleanup continues three days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP PhotoCharlie Riedel)
A battered sign stands outside the wreckage of Plaza Towers Elementary School, where seven children were killed earlier in the week when a tornado hit Moore, Okla., Thursday, May 23, 2013. Cleanup continues three days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP Photo/Charlie Riedel)
A battered event sign stands outside the wreckage of Plaza Towers Elementary School, where seven children were killed earlier in the week when a tornado hit Moore, Okla., Thursday, May 23, 2013. Cleanup continues three days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP PhotoCharlie Riedel)
A battered event sign stands outside the wreckage of Plaza Towers Elementary School, where seven children were killed earlier in the week when a tornado hit Moore, Okla., Thursday, May 23, 2013. Cleanup continues three days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP Photo/Charlie Riedel)
Christine Jones, center, is comforted by her cousin, Ann Worden, right, as she both smiles and wipes away the tears as she talks about looking for lost wedding rings at her tornado demolished home in Moore, Okla., Thursday, May 23, 2013. At left is Matthew Trawick, who is helping look through the rubble. (AP PhotoSue Ogrocki)
Christine Jones, center, is comforted by her cousin, Ann Worden, right, as she both smiles and wipes away the tears as she talks about looking for lost wedding rings at her tornado demolished home in Moore, Okla., Thursday, May 23, 2013. At left is Matthew Trawick, who is helping look through the rubble. (AP Photo/Sue Ogrocki)
Kirk Guarnera takes a break from sorting through the rubble at his tornado-ravaged home Thursday, May 23, 2013, in Moore, Okla. Cleanup continues three days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP PhotoCharlie Riedel)
Kirk Guarnera takes a break from sorting through the rubble at his tornado-ravaged home Thursday, May 23, 2013, in Moore, Okla. Cleanup continues three days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP Photo/Charlie Riedel)
Brittany Brown, left, and her grandmother Tracy Harville tend to Harvilles cat Kitty after finding the cat buried in tornado rubble for two days at the Harvilles destroyed home Wednesday, May 22, 2013, in Moore, Okla. Cleanup continues two days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP PhotoCharlie Riedel)
Brittany Brown, left, and her grandmother Tracy Harville tend to Harville's cat "Kitty" after finding the cat buried in tornado rubble for two days at the Harville's destroyed home Wednesday, May 22, 2013, in Moore, Okla. Cleanup continues two days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP Photo/Charlie Riedel)
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Brittany Brown rushes to get aid after finding her grandmothers cat Kitty which was buried in tornado rubble for two days at the grandmothers destroyed home Wednesday, May 22, 2013, in Moore, Okla. Cleanup continues two days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP PhotoCharlie Riedel)
Brittany Brown rushes to get aid after finding her grandmother's cat "Kitty" which was buried in tornado rubble for two days at the grandmother's destroyed home Wednesday, May 22, 2013, in Moore, Okla. Cleanup continues two days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP Photo/Charlie Riedel)
People take a break from searching for their belongings in Moore, Okla., Wednesday, May 22, 2013. A huge tornado roared through the Oklahoma City suburb on Monday, flattening everything in its path. (AP PhotoAlonzo Adams)
People take a break from searching for their belongings in Moore, Okla., Wednesday, May 22, 2013. A huge tornado roared through the Oklahoma City suburb on Monday, flattening everything in its path. (AP Photo/Alonzo Adams)
This undated handout photo provided by the Hornsby family, shows JaNae Hornsby. JaNae, who was killed when a tornado struck Plaza Towers Elementary School in Moore, Texas on May 20, 2013, is described by her father Joshua Hornsby as a special baby who made friends with everyone she met. (AP PhotoCourtesy of the Hornsby Family)
This undated handout photo provided by the Hornsby family, shows JaNae Hornsby. JaNae, who was killed when a tornado struck Plaza Towers Elementary School in Moore, Texas on May 20, 2013, is described by her father Joshua Hornsby as a "special baby" who made friends with everyone she met. (AP Photo/Courtesy of the Hornsby Family)
This undated handout photo provided by Brandie Candelaria shows Antonia Candelaria. Candelaria was killed when a tornado struck Plaza Towers Elementary School in Moore, Texas on Monday, May 20, 2013. (AP PhotoCourtesy of Brandie Candelaria)
This undated handout photo provided by Brandie Candelaria shows Antonia Candelaria. Candelaria was killed when a tornado struck Plaza Towers Elementary School in Moore, Texas on Monday, May 20, 2013. (AP Photo/Courtesy of Brandie Candelaria)
James Pitts uses a sledge hammer to try to force open a friends trunk in a tornado-ravaged car as residents sort through their tornado-ravaged homes Wednesday, May 22, 2013, in Moore, Okla. Cleanup continues two days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP PhotoCharlie Riedel)
James Pitts uses a sledge hammer to try to force open a friend's trunk in a tornado-ravaged car as residents sort through their tornado-ravaged homes Wednesday, May 22, 2013, in Moore, Okla. Cleanup continues two days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP Photo/Charlie Riedel)
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Oklahoma City Thunders Kevin Durant, center, poses for a photo with Catie Mann, left, and Diana Neal, right, near Manns tornado-damaged home in Moore, Okla., Wednesday, May 22, 2013. Durant donated 1 million to the American Red Cross for relief efforts. The Thunder matched the 1 million donation. (AP PhotoSue Ogrocki)
Oklahoma City Thunder's Kevin Durant, center, poses for a photo with Catie Mann, left, and Diana Neal, right, near Mann's tornado-damaged home in Moore, Okla., Wednesday, May 22, 2013. Durant donated $1 million to the American Red Cross for relief efforts. The Thunder matched the $1 million donation. (AP Photo/Sue Ogrocki)
Jesse Edgar takes a break in the shade while helping salvage items at a friends home Wednesday, May 22, 2013, in Moore, Okla. Cleanup continues two days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP PhotoCharlie Riedel)
Jesse Edgar takes a break in the shade while helping salvage items at a friend's home Wednesday, May 22, 2013, in Moore, Okla. Cleanup continues two days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP Photo/Charlie Riedel)
Oklahoma City Thunders Kevin Durant walks past tornado damaged homes with his friend Randy Williams in a neighborhood in Moore, Okla., Wednesday, May 22, 2013. Durant donated 1 million to the American Red Cross for relief efforts. The Thunder matched the 1 million donation. (AP PhotoSue Ogrocki)
Oklahoma City Thunder's Kevin Durant walks past tornado damaged homes with his friend Randy Williams in a neighborhood in Moore, Okla., Wednesday, May 22, 2013. Durant donated $1 million to the American Red Cross for relief efforts. The Thunder matched the $1 million donation. (AP Photo/Sue Ogrocki)
The wreckage of a row of completely leveled homes sits adjacent to a row of partially-destroyed houses, two days after a tornado moved through Moore, Okla., Wednesday, May 22, 2013. The huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP PhotoBrennan Linsley)
The wreckage of a row of completely leveled homes sits adjacent to a row of partially-destroyed houses, two days after a tornado moved through Moore, Okla., Wednesday, May 22, 2013. The huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP Photo/Brennan Linsley)
Nick Balen holds his daughter Kinley while visiting the destroyed doctors office where his wife worked and survived Mondays tornado, along with 13 other people, Wednesday, May 22, 2013, in Moore, Okla. Cleanup continues two days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP PhotoCharlie Riedel)
Nick Balen holds his daughter Kinley while visiting the destroyed doctor's office where his wife worked and survived Monday's tornado, along with 13 other people, Wednesday, May 22, 2013, in Moore, Okla. Cleanup continues two days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP Photo/Charlie Riedel)
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Eric Lowery looks at tornado-ravaged vehicles while retrieving items from his mohters car at a destroyed strip mall Wednesday, May 22, 2013, in Moore, Okla. Cleanup continues two days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP PhotoCharlie Riedel)
Eric Lowery looks at tornado-ravaged vehicles while retrieving items from his mohter's car at a destroyed strip mall Wednesday, May 22, 2013, in Moore, Okla. Cleanup continues two days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP Photo/Charlie Riedel)
A worker removes clears debris from the tornado-ravaged Moore Medical Center Wednesday, May 22, 2013, in Moore, Okla. Cleanup continues two days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP PhotoCharlie Riedel)
A worker removes clears debris from the tornado-ravaged Moore Medical Center Wednesday, May 22, 2013, in Moore, Okla. Cleanup continues two days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP Photo/Charlie Riedel)
A search and rescue team from Tennessee search a field Wednesday, May 22, 2013, in Moore, Okla. Cleanup continues two days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP PhotoCharlie Riedel)
A search and rescue team from Tennessee search a field Wednesday, May 22, 2013, in Moore, Okla. Cleanup continues two days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP Photo/Charlie Riedel)
Jordan Evans looks through files as he helps salvage items from his fathers destroyed insurance office Wednesday, May 22, 2013, in Moore, Okla. Cleanup continues two days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP PhotoCharlie Riedel)
Jordan Evans looks through files as he helps salvage items from his father's destroyed insurance office Wednesday, May 22, 2013, in Moore, Okla. Cleanup continues two days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP Photo/Charlie Riedel)
Susan Kates salvages items from a friends tornado-ravaged home Wednesday, May 22, 2013, in Moore, Okla. Cleanup continues two days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP PhotoCharlie Riedel)
Susan Kates salvages items from a friend's tornado-ravaged home Wednesday, May 22, 2013, in Moore, Okla. Cleanup continues two days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP Photo/Charlie Riedel)
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A tornado-ravaged home stands in the distance beyond a twisted street sign Wednesday, May 22, 2013, in Moore, Okla. Cleanup continues two days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP PhotoCharlie Riedel)
A tornado-ravaged home stands in the distance beyond a twisted street sign Wednesday, May 22, 2013, in Moore, Okla. Cleanup continues two days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP Photo/Charlie Riedel)
Rick Brown puts on a pair of boots after finding them in his tornado-ravaged home Wednesday, May 22, 2013, in Moore, Okla. Cleanup continues two days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP PhotoCharlie Riedel)
Rick Brown puts on a pair of boots after finding them in his tornado-ravaged home Wednesday, May 22, 2013, in Moore, Okla. Cleanup continues two days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP Photo/Charlie Riedel)
Claudia Clark clears tornado debris from a cemetery Wednesday, May 22, 2013, in Moore, Okla. Cleanup continues two days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP PhotoCharlie Riedel)
Claudia Clark clears tornado debris from a cemetery Wednesday, May 22, 2013, in Moore, Okla. Cleanup continues two days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP Photo/Charlie Riedel)
A worker removes debris from tornado-stripped trees Wednesday, May 22, 2013, in Moore, Okla. Cleanup continues two days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP PhotoCharlie Riedel)
A worker removes debris from tornado-stripped trees Wednesday, May 22, 2013, in Moore, Okla. Cleanup continues two days after a huge tornado roared through the Oklahoma City suburb, flattening a wide swath of homes and businesses. (AP Photo/Charlie Riedel)
Penny Phillips throws out a bag of salvaged clothing as she goes through the remains of her home on Tuesday, May 21, 2013 in Moore, Okla. that was destroyed by Mondays tornado in the area near 4th and Bryant. (AP PhotoThe Oklahoman, Chris Landsberger)
Penny Phillips throws out a bag of salvaged clothing as she goes through the remains of her home on Tuesday, May 21, 2013 in Moore, Okla. that was destroyed by Monday's tornado in the area near 4th and Bryant. (AP Photo/The Oklahoman, Chris Landsberger)
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A man carries a drawer and a bag filled with clothes from Rachel Hernandez home as residents of the Heatherwood Addition, on the south side of SE 4 and Bryant in Moore, Okla., returned to their homes Tuesday, May 21, 2013, to salvage any items after Mondays destructive tornado. (AP PhotoThe Oklahoman, Jim Beckel)
A man carries a drawer and a bag filled with clothes from Rachel Hernandez' home as residents of the Heatherwood Addition, on the south side of SE 4 and Bryant in Moore, Okla., returned to their homes Tuesday, May 21, 2013, to salvage any items after Monday's destructive tornado. (AP Photo/The Oklahoman, Jim Beckel)
Vehículos dañados en el tornado del lunes en el Centro Médico Moore, el martes 21 de mayo de 2013, en Moore, Oklahoma. Un tornado de categoría máxima devastó el lunes este suburbio de Oklahoma City, provocando fuertes daños materiales y víctimas. (Foto APTony Gutiérrez)
Vehículos dañados en el tornado del lunes en el Centro Médico Moore, el martes 21 de mayo de 2013, en Moore, Oklahoma. Un tornado de categoría máxima devastó el lunes este suburbio de Oklahoma City, provocando fuertes daños materiales y víctimas. (Foto AP/Tony Gutiérrez)
A rescuer searches a neighborhood near Telephone Rd., in Moore, Okla., Tuesday, May 21, 2013. Rescue workers neared the end of the search for survivors and the dead in the Oklahoma City suburb where a mammoth tornado destroyed countless homes, cleared lots down to bare red earth and claimed 24 lives, including those of nine children. (AP PhotoThe Oklahoman, Sarah Phipps)
A rescuer searches a neighborhood near Telephone Rd., in Moore, Okla., Tuesday, May 21, 2013. Rescue workers neared the end of the search for survivors and the dead in the Oklahoma City suburb where a mammoth tornado destroyed countless homes, cleared lots down to bare red earth and claimed 24 lives, including those of nine children. (AP Photo/The Oklahoman, Sarah Phipps)
Katie Thomas retira el martes 21 de mayo de 2013 escombros de la guardería infantil de una amiga, destruida por el devastador tornado que azotó el lunes a Moore, un suburbio de Oklahoma City. . (Foto APCharlie Riedel)
Katie Thomas retira el martes 21 de mayo de 2013 escombros de la guardería infantil de una amiga, destruida por el devastador tornado que azotó el lunes a Moore, un suburbio de Oklahoma City. . (Foto AP/Charlie Riedel)
Jeff Thayer, right, and his son Heath look at a tornado-ravaged pickup truck belonging to another son Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP PhotoCharlie Riedel)
Jeff Thayer, right, and his son Heath look at a tornado-ravaged pickup truck belonging to another son Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP Photo/Charlie Riedel)
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Scott Perdue, left, yells to his parents, Gene and Colleen Perdue, not pictured, that he has located his fathers 1957 Chevy in what remains of their barn as his brother-in-law Jeff Teel takes a photo at the home of Gene and Colleen Perdue, 1409 SW 149th, in Oklahoma City, on Tuesday, May 21, 2013, after a tornado struck south Oklahoma City and Moore, Okla., on Monday. (AP PhotoThe Oklahoman, Nate Billings)
Scott Perdue, left, yells to his parents, Gene and Colleen Perdue, not pictured, that he has located his father's 1957 Chevy in what remains of their barn as his brother-in-law Jeff Teel takes a photo at the home of Gene and Colleen Perdue, 1409 SW 149th, in Oklahoma City, on Tuesday, May 21, 2013, after a tornado struck south Oklahoma City and Moore, Okla., on Monday. (AP Photo/The Oklahoman, Nate Billings)
A firefighter watches vehicles pass by in front of a destroyed home north of SW 149th between Western and Santa Fe on Tuesday, May 21, 2013, after a tornado struck south Oklahoma City and Moore, Okla., on Monday. (AP PhotoThe Oklahoman, Nate Billings)
A firefighter watches vehicles pass by in front of a destroyed home north of SW 149th between Western and Santa Fe on Tuesday, May 21, 2013, after a tornado struck south Oklahoma City and Moore, Okla., on Monday. (AP Photo/The Oklahoman, Nate Billings)
Storm clouds form over central Illinois corn and soybean grain bins Tuesday, May 21, 2013, in Pleasant Plains, Ill. Farmers and rural residents are paying close attention to weather forecast predicting destructive weather and tornados in the Midwest. A huge tornado roared through the Oklahoma City suburb Monday, flattening an entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP PhotoSeth Perlman)
Storm clouds form over central Illinois corn and soybean grain bins Tuesday, May 21, 2013, in Pleasant Plains, Ill. Farmers and rural residents are paying close attention to weather forecast predicting destructive weather and tornados in the Midwest. A huge tornado roared through the Oklahoma City suburb Monday, flattening an entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP Photo/Seth Perlman)
In this Tuesday, May 21, 2013 aerial photo traffic moves slowly along the northbound lanes of Interstate 35 as it runs through the city of Moore, Okla., which was hit by Mondays powerful tornado. The huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP PhotoTony Gutierrez)
In this Tuesday, May 21, 2013 aerial photo traffic moves slowly along the northbound lanes of Interstate 35 as it runs through the city of Moore, Okla., which was hit by Monday's powerful tornado. The huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP Photo/Tony Gutierrez)
In this aerial photo, a person, lower right, stand in front of a home demolished home by Mondays tornado, in Moore, Okla., Tuesday, May 21, 2013. The huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP PhotoTony Gutierrez)
In this aerial photo, a person, lower right, stand in front of a home demolished home by Monday's tornado, in Moore, Okla., Tuesday, May 21, 2013. The huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP Photo/Tony Gutierrez)
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A home in Moore, Okla. sits severely damaged Tuesday, May 21, 2013, after Mondays massive tornado moved through the area. The huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP PhotoAlonzo Adams)
A home in Moore, Okla. sits severely damaged Tuesday, May 21, 2013, after Monday's massive tornado moved through the area. The huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP Photo/Alonzo Adams)
John Curry looks over his sons destroyed home and land in Moore, Okla., on Tuesday, May 21, 2013. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP PhotoAlonzo Adams)
John Curry looks over his son's destroyed home and land in Moore, Okla., on Tuesday, May 21, 2013. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP Photo/Alonzo Adams)
CORRECTS NAME OF SCHOOL TO PLAZA TOWERS ELEMENTARY SCHOOL - An aerial view shows Plaza Towers Elementary School with vehicles thrown about after Mondays tornado, Tuesday, May 21, 2013, in Moore, Okla. At least 24 people, including nine children, were killed in the massive tornado that flattened homes and a school in Moore, on Monday afternoon. (AP PhotoTony Gutierrez)
CORRECTS NAME OF SCHOOL TO PLAZA TOWERS ELEMENTARY SCHOOL - An aerial view shows Plaza Towers Elementary School with vehicles thrown about after Monday's tornado, Tuesday, May 21, 2013, in Moore, Okla. At least 24 people, including nine children, were killed in the massive tornado that flattened homes and a school in Moore, on Monday afternoon. (AP Photo/Tony Gutierrez)
Michelle Kelley peers into her friends tornado-ravaged car Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP PhotoCharlie Riedel)
Michelle Kelley peers into her friend's tornado-ravaged car Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP Photo/Charlie Riedel)
Storm clouds build in the distance beyond tornado-ravaged homes Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP PhotoCharlie Riedel)
Storm clouds build in the distance beyond tornado-ravaged homes Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP Photo/Charlie Riedel)
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Justin Stehan salvages photographs from his tornado-ravaged home Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP PhotoCharlie Riedel)
Justin Stehan salvages photographs from his tornado-ravaged home Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP Photo/Charlie Riedel)
Oklahoma Gov. Mary Fallin looks out the window of a National Guard helicopter as she tours the tornado damage in Moore, Okla., Tuesday, May 21, 2013. (AP PhotoSue Ogrocki, Pool)
Oklahoma Gov. Mary Fallin looks out the window of a National Guard helicopter as she tours the tornado damage in Moore, Okla., Tuesday, May 21, 2013. (AP Photo/Sue Ogrocki, Pool)
Wreckage of the Plaza Towers Elementary School in Moore, Okla., is pictured from a National Guard helicopter during a tour of tornado damaged areas by Oklahoma Gov. Mary Fallin, Tuesday, May 21, 2013. (AP PhotoSue Ogrocki, Pool)
Wreckage of the Plaza Towers Elementary School in Moore, Okla., is pictured from a National Guard helicopter during a tour of tornado damaged areas by Oklahoma Gov. Mary Fallin, Tuesday, May 21, 2013. (AP Photo/Sue Ogrocki, Pool)
Storm clouds build in the distance beyond tornado-ravaged homes Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP PhotoCharlie Riedel)
Storm clouds build in the distance beyond tornado-ravaged homes Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP Photo/Charlie Riedel)
A aerial view shows Moore Medical Center damaged from Mondays tornado, Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school. (AP PhotoTony Gutierrez)
A aerial view shows Moore Medical Center damaged from Monday's tornado, Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school. (AP Photo/Tony Gutierrez)
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Emergency workers work around tornado-damaged building, Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school. (AP PhotoTony Gutierrez)
Emergency workers work around tornado-damaged building, Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school. (AP Photo/Tony Gutierrez)
Homes damaged by Mondays tornado are shown Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school. (AP PhotoTony Gutierrez)
Homes damaged by Monday's tornado are shown Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school. (AP Photo/Tony Gutierrez)
Jimmy Hodges helps Chad Heltcel and his wife Cassidi salvage the wreckage of Chad Heltcels family home, which was destroyed Monday when a tornado moved through Moore, Okla., Tuesday, May 21, 2013. The huge tornado roared through the Oklahoma City suburb, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds.(AP PhotoBrennan Linsley)
Jimmy Hodges helps Chad Heltcel and his wife Cassidi salvage the wreckage of Chad Heltcel's family home, which was destroyed Monday when a tornado moved through Moore, Okla., Tuesday, May 21, 2013. The huge tornado roared through the Oklahoma City suburb, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds.(AP Photo/Brennan Linsley)
A damaged structure is seen following Mondays tornado Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school. (AP PhotoTony Gutierrez)
A damaged structure is seen following Monday's tornado Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school. (AP Photo/Tony Gutierrez)
Justin Stehan salvages photographs from his tornado-ravaged home Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP PhotoCharlie Riedel)
Justin Stehan salvages photographs from his tornado-ravaged home Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP Photo/Charlie Riedel)
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Jim Stubblefield, of Norman, Okla., raises a tattered flag he found while helping his sister salvage items from her tornado-ravaged home Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP PhotoCharlie Riedel)
Jim Stubblefield, of Norman, Okla., raises a tattered flag he found while helping his sister salvage items from her tornado-ravaged home Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP Photo/Charlie Riedel)
An unidentified man watches a rain storm from inside the garage of his tornado-damaged home Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP PhotoCharlie Riedel)
An unidentified man watches a rain storm from inside the garage of his tornado-damaged home Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP Photo/Charlie Riedel)
Victor Gonzalez seeks shelter from the rain under a sheet of plastic as he helps a friend salvage items from a tornado-ravaged home Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP PhotoCharlie Riedel)
Victor Gonzalez seeks shelter from the rain under a sheet of plastic as he helps a friend salvage items from a tornado-ravaged home Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds. (AP Photo/Charlie Riedel)
An aerial view shows the Monday tornados path through a residential area Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school. (AP PhotoTony Gutierrez)
An aerial view shows the Monday tornado's path through a residential area Tuesday, May 21, 2013, in Moore, Okla. A huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school. (AP Photo/Tony Gutierrez)
A local resident allowed by security officers into an otherwise sealed off neighborhood walks past the rubble of destroyed homes, one day after a tornado moved through Moore, Okla., Tuesday, May 21, 2013. The huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds up to 200 mph. (AP PhotoBrennan Linsley)
A local resident allowed by security officers into an otherwise sealed off neighborhood walks past the rubble of destroyed homes, one day after a tornado moved through Moore, Okla., Tuesday, May 21, 2013. The huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds up to 200 mph. (AP Photo/Brennan Linsley)
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A member of a security team helps guard an area of rubble from a destroyed residential neighborhood, one day after a tornado moved through Moore, Okla., Tuesday, May 21, 2013. The huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against the winds. (AP PhotoBrennan Linsley)
A member of a security team helps guard an area of rubble from a destroyed residential neighborhood, one day after a tornado moved through Moore, Okla., Tuesday, May 21, 2013. The huge tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against the winds. (AP Photo/Brennan Linsley)
A man searches debris near Telephone Road and SW 4th after a tornado moves through Moore, Okla. on Monday, May 20, 2013. (AP PhotoAlonzo Adams)
A man searches debris near Telephone Road and SW 4th after a tornado moves through Moore, Okla. on Monday, May 20, 2013. (AP Photo/Alonzo Adams)
People go through the debris near Telephone Road and SW 4th Street after a tornado moves through Moore, Okla. on Monday, May 20, 2013. (AP PhotoAlonzo Adams)
People go through the debris near Telephone Road and SW 4th Street after a tornado moves through Moore, Okla. on Monday, May 20, 2013. (AP Photo/Alonzo Adams)
Debris lays on the northbound lanes of I-35 just south of SW 4th street in Moore, Okla. after a tornado moves through the area on Monday, May 20, 2013. (AP PhotoAlonzo Adams)
Debris lays on the northbound lanes of I-35 just south of SW 4th street in Moore, Okla. after a tornado moves through the area on Monday, May 20, 2013. (AP Photo/Alonzo Adams)
A worker clears debris from the southbound lanes of I-35 in Moore, Okla. after a tornado moves through the area on Monday, May 20, 2013. (AP PhotoAlonzo Adams)
A worker clears debris from the southbound lanes of I-35 in Moore, Okla. after a tornado moves through the area on Monday, May 20, 2013. (AP Photo/Alonzo Adams)
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Two men go through the damage surrounding the Moore Medical Center and damaged vehicals after a tornado moves through Moore, Okla. on Monday, May 20, 2013. (AP PhotoAlonzo Adams)
Two men go through the damage surrounding the Moore Medical Center and damaged vehicals after a tornado moves through Moore, Okla. on Monday, May 20, 2013. (AP Photo/Alonzo Adams)
An American flag blows in the wind at sunrise atop the rubble of a destroyed home a day after a tornado moved through Moore, Okla., Tuesday, May 21, 2013. The monstrous tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds up to 200 mph. (AP PhotoBrennan Linsley)
An American flag blows in the wind at sunrise atop the rubble of a destroyed home a day after a tornado moved through Moore, Okla., Tuesday, May 21, 2013. The monstrous tornado roared through the Oklahoma City suburb Monday, flattening entire neighborhoods and destroying an elementary school with a direct blow as children and teachers huddled against winds up to 200 mph. (AP Photo/Brennan Linsley)
A tornado victim is loaded in an ambulance on Robinson and 142 in south Oklahoma City, Okla., Monday, May 20, 2013. (AP Photo The Oklahoman, David McDaniel)
A tornado victim is loaded in an ambulance on Robinson and 142 in south Oklahoma City, Okla., Monday, May 20, 2013. (AP Photo/ The Oklahoman, David McDaniel)
Teachers carry children away from Briarwood Elementary school after a tornado destroyed the school in south Oklahoma City, Okla, Monday, May 20, 2013. Near SW 149th and Hudson. (AP Photo The Oklahoman, Paul Hellstern)
Teachers carry children away from Briarwood Elementary school after a tornado destroyed the school in south Oklahoma City, Okla, Monday, May 20, 2013. Near SW 149th and Hudson. (AP Photo/ The Oklahoman, Paul Hellstern)
Gene Tripp sits in his rocking chair where his home once stood after being destroyed by a tornado hit the area near 149th and Drexel on Monday, May 20, 2013 in Oklahoma City, Okla. (AP Photo The Oklahoman, Chris Landsberger)
Gene Tripp sits in his rocking chair where his home once stood after being destroyed by a tornado hit the area near 149th and Drexel on Monday, May 20, 2013 in Oklahoma City, Okla. (AP Photo/ The Oklahoman, Chris Landsberger)
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A couple after a tornado moves through Moore, Okla. on Monday, May 20, 2013. (AP PhotoAlonzo Adams)
A couple after a tornado moves through Moore, Okla. on Monday, May 20, 2013. (AP Photo/Alonzo Adams)
Two men attempt to pry open a door on this car to check for victims in a business parking lot west of I-35 south of 4th Street in Moore, on Monday, May 20, 2013.A monstrous tornado roared through the Oklahoma City suburbs, flattening entire neighborhoods with winds up to 200 mph, setting buildings on fire and landing a direct blow on an elementary school. (AP PhotoThe Oklahoman, Jim Beckel)
Two men attempt to pry open a door on this car to check for victims in a business parking lot west of I-35 south of 4th Street in Moore, on Monday, May 20, 2013.A monstrous tornado roared through the Oklahoma City suburbs, flattening entire neighborhoods with winds up to 200 mph, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo/The Oklahoman, Jim Beckel)
Damaged cars lay ruined at a business parking lot west of Interstate 35, south of 4th Street in Moore, Okla., on Monday, May 20, 2013. (AP PhotoThe Oklahoman, Jim Beckel)
Damaged cars lay ruined at a business parking lot west of Interstate 35, south of 4th Street in Moore, Okla., on Monday, May 20, 2013. (AP Photo/The Oklahoman, Jim Beckel)
The Moore Medical Center and vehicles lay damaged after a tornado moves through Moore, Okla. on Monday, May 20, 2013. (AP PhotoAlonzo Adams)
The Moore Medical Center and vehicles lay damaged after a tornado moves through Moore, Okla. on Monday, May 20, 2013. (AP Photo/Alonzo Adams)
A man searches a damaged home near SW 4th Street and Telephone Road after a tornado moved through Moore, Okla., on Monday, May 20, 2013. (AP PhotoAlonzo Adams)
A man searches a damaged home near SW 4th Street and Telephone Road after a tornado moved through Moore, Okla., on Monday, May 20, 2013. (AP Photo/Alonzo Adams)
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This aerial photo shows the remains of homes hit by a massive tornado in Moore, Okla., Monday May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP PhotoSteve Gooch)
This aerial photo shows the remains of homes hit by a massive tornado in Moore, Okla., Monday May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo/Steve Gooch)
Workers walk past the rubble of Plaza Towers Elementary School after a tornado moved through Moore, Okla., Monday, May 20, 2013. (AP Photo Sue Ogrocki)
Workers walk past the rubble of Plaza Towers Elementary School after a tornado moved through Moore, Okla., Monday, May 20, 2013. (AP Photo Sue Ogrocki)
A Moore Medical Center patient sits in the parking lot after a tornado damaged the hospital in Moore, Okla. on Monday, May 20, 2013. (AP PhotoAlonzo Adams)
A Moore Medical Center patient sits in the parking lot after a tornado damaged the hospital in Moore, Okla. on Monday, May 20, 2013. (AP Photo/Alonzo Adams)
Workers continue to dig through the rubble of Plaza Towers Elementary School after a tornado moved through Moore, Okla., Monday, May 20, 2013. (AP Photo Sue Ogrocki)
Workers continue to dig through the rubble of Plaza Towers Elementary School after a tornado moved through Moore, Okla., Monday, May 20, 2013. (AP Photo Sue Ogrocki)
This aerial photo shows the remains of homes hit by a massive tornado in Moore, Okla., Monday May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP PhotoSteve Gooch)
This aerial photo shows the remains of homes hit by a massive tornado in Moore, Okla., Monday May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo/Steve Gooch)
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People react in front of the Plaza Towers Elementary school in Moore following a deadly tornado, Monday, May 20, 2013. (AP Photo The Oklahoman, Sarah Phipps)
People react in front of the Plaza Towers Elementary school in Moore following a deadly tornado, Monday, May 20, 2013. (AP Photo/ The Oklahoman, Sarah Phipps)
People react in front of the Towers Plaza Elementary school in Moore following a deadly tornado, Monday, May 20, 2013. Photo by Sarah Phipps, The Oklahoman
People react in front of the Towers Plaza Elementary school in Moore following a deadly tornado, Monday, May 20, 2013. Photo by Sarah Phipps, The Oklahoman
This aerial photo shows the remains of homes hit by a massive tornado in Moore, Okla., Monday May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP PhotoSteve Gooch)
This aerial photo shows the remains of homes hit by a massive tornado in Moore, Okla., Monday May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo/Steve Gooch)
Clark Gardner, at left, and another man place an American flag on debris in a neighborhood off of Telephone Road in Moore, Okla., after a tornado moved through the area on Monday, May 20, 2013. (AP Photo The Oklahoman, Bryan Terry)
Clark Gardner, at left, and another man place an American flag on debris in a neighborhood off of Telephone Road in Moore, Okla., after a tornado moved through the area on Monday, May 20, 2013. (AP Photo/ The Oklahoman, Bryan Terry)
Cindy Wilson texts to friends after her home was destroyed in the afternoon tornado. Cindy and her husband, Staff Sgt. B. Wilson, took cover in their homes bathtub when the tornado hit. Cindy received a deep gash to her forehead and her wound was treated by first responders at the scene. Tornado caused extensive damage in the Madison Place Addition, near SE 8 and Tower in Moore, on Monday, May 20, 2013. (AP Photo The Oklahoman, Jim Beckel)
Cindy Wilson texts to friends after her home was destroyed in the afternoon tornado. Cindy and her husband, Staff Sgt. B. Wilson, took cover in their home's bathtub when the tornado hit. Cindy received a deep gash to her forehead and her wound was treated by first responders at the scene. Tornado caused extensive damage in the Madison Place Addition, near SE 8 and Tower in Moore, on Monday, May 20, 2013. (AP Photo/ The Oklahoman, Jim Beckel)
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A man and a woman assist a state trooper carry a large tarp to cover a tornado victim found in a field across the street from the Madison Place Addition, near SE 8 and Tower in Moore, on Monday, May 20, 2013. (AP Photo The Oklahoman, Jim Beckel)
A man and a woman assist a state trooper carry a large tarp to cover a tornado victim found in a field across the street from the Madison Place Addition, near SE 8 and Tower in Moore, on Monday, May 20, 2013. (AP Photo/ The Oklahoman, Jim Beckel)
This aerial photo shows the remains of homes hit by a massive tornado in Moore, Okla., Monday May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP PhotoSteve Gooch)
This aerial photo shows the remains of homes hit by a massive tornado in Moore, Okla., Monday May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo/Steve Gooch)
This aerial photo shows damage to Plaza Towers Elementary School after it was hit by a massive tornado in Moore, Okla., Monday May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP PhotoSteve Gooch)
This aerial photo shows damage to Plaza Towers Elementary School after it was hit by a massive tornado in Moore, Okla., Monday May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo/Steve Gooch)
Shawna Scott, second from left, tries to help Jeanett McAllister, second from right, and McAllisters son, Tonice Woods, find McAllisters two nieces, Sabrina and Olivia Durkey, who are students at Briarwood Elementary, after a tornado struck south Oklahoma City and Moore, Okla., Monday, May 20, 2013. At left is Feliciana Hernando, Scotts niece. Scott has a home daycare near SW 156th and Vicki and went to Briarwood to pick up one of the children she watches. She took a group of students from the destroyed school to her home to wait for their parents. (AP Photo The Oklahoman, Nate Billings)
Shawna Scott, second from left, tries to help Jeanett McAllister, second from right, and McAllister's son, Tonice Woods, find McAllister's two nieces, Sabrina and Olivia Durkey, who are students at Briarwood Elementary, after a tornado struck south Oklahoma City and Moore, Okla., Monday, May 20, 2013. At left is Feliciana Hernando, Scott's niece. Scott has a home daycare near SW 156th and Vicki and went to Briarwood to pick up one of the children she watches. She took a group of students from the destroyed school to her home to wait for their parents. (AP Photo/ The Oklahoman, Nate Billings)
Rebekah Stuck hugs her son, Aiden Stuck, 7, after she found him in front of the destroyed Briarwood Elementary after a tornado struck south Oklahoma City and Moore, Okla., Monday, May 20, 2013. Aiden Stuck was inside the school when it was hit. (AP Photo The Oklahoman, Nate Billings)
Rebekah Stuck hugs her son, Aiden Stuck, 7, after she found him in front of the destroyed Briarwood Elementary after a tornado struck south Oklahoma City and Moore, Okla., Monday, May 20, 2013. Aiden Stuck was inside the school when it was hit. (AP Photo/ The Oklahoman, Nate Billings)
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Mary Barnhill, left, sits next to her daughter-in-law Brenda Barnhill after a tornado destroyed the home of Brenda Barnhill and her husband Larry Barnhill, Marys son, near SW 149th and Vicki Dr., when a tornado struck south Oklahoma City and Moore, Okla., Monday, May 20, 2013. (AP Photo The Oklahoman, Nate Billings)
Mary Barnhill, left, sits next to her daughter-in-law Brenda Barnhill after a tornado destroyed the home of Brenda Barnhill and her husband Larry Barnhill, Mary's son, near SW 149th and Vicki Dr., when a tornado struck south Oklahoma City and Moore, Okla., Monday, May 20, 2013. (AP Photo/ The Oklahoman, Nate Billings)
Briarwood Elementary P.E. teacher Mike Murphy comforts Aiden Stuck, 7, as he waits for his mother at the school after a tornado destroyed Briarwood Elementary and struck south Oklahoma City and Moore, Okla., Monday, May 20, 2013.(AP Photo The Oklahoman, Nate Billings)
Briarwood Elementary P.E. teacher Mike Murphy comforts Aiden Stuck, 7, as he waits for his mother at the school after a tornado destroyed Briarwood Elementary and struck south Oklahoma City and Moore, Okla., Monday, May 20, 2013.(AP Photo/ The Oklahoman, Nate Billings)
This aerial photo shows the remains of homes hit by a massive tornado in Moore, Okla., Monday May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP PhotoSteve Gooch)
This aerial photo shows the remains of homes hit by a massive tornado in Moore, Okla., Monday May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo/Steve Gooch)
People walk through a neighborhood south of SW 149th between Western and Hudson after a tornado struck south Oklahoma City and Moore, Okla., Monday, May 20, 2013. (AP Photo The Oklahoman, Nate Billings)
People walk through a neighborhood south of SW 149th between Western and Hudson after a tornado struck south Oklahoma City and Moore, Okla., Monday, May 20, 2013. (AP Photo/ The Oklahoman, Nate Billings)
Two men walk through debris just east of Western and north of SW 149th after a tornado struck south Oklahoma City and Moore, Okla., Monday, May 20, 2013. (AP Photo The Oklahoman, Nate Billings)
Two men walk through debris just east of Western and north of SW 149th after a tornado struck south Oklahoma City and Moore, Okla., Monday, May 20, 2013. (AP Photo/ The Oklahoman, Nate Billings)
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This aerial photo shows damage to buildings hit by a massive tornado in Moore, Okla., Monday May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP PhotoSteve Gooch)
This aerial photo shows damage to buildings hit by a massive tornado in Moore, Okla., Monday May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo/Steve Gooch)
Two men stand in front of Plaza Towers Elementary School in Moore, Okla., after a tornado destroyed a tornado on Monday, May 20, 2013. (AP Photo The Oklahoman, Bryan Terry)
Two men stand in front of Plaza Towers Elementary School in Moore, Okla., after a tornado destroyed a tornado on Monday, May 20, 2013. (AP Photo/ The Oklahoman, Bryan Terry)
Emergency crews recover a body from the 7-11 store at the corner of Telephone Road and SW 4th Street after a tornado in Moore, Okla. on Monday, May 20, 2013. (AP PhotoAlonzo Adams)
Emergency crews recover a body from the 7-11 store at the corner of Telephone Road and SW 4th Street after a tornado in Moore, Okla. on Monday, May 20, 2013. (AP Photo/Alonzo Adams)
This aerial photo shows damage to Moore Medical Center after it was hit by a massive tornado in Moore, Okla., Monday May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP PhotoSteve Gooch)
This aerial photo shows damage to Moore Medical Center after it was hit by a massive tornado in Moore, Okla., Monday May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo/Steve Gooch)
Antonio Flores of Moore, Okla. searches for his car after a tornado damaged the Moore Medical Center and the vehicles in the parking lot in Moore, Okla. on Monday, May 20, 2013. (AP PhotoAlonzo Adams)
Antonio Flores of Moore, Okla. searches for his car after a tornado damaged the Moore Medical Center and the vehicles in the parking lot in Moore, Okla. on Monday, May 20, 2013. (AP Photo/Alonzo Adams)
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Rescue workers dig through the rubble of a collapsed wall at the Plaza Tower Elementary School to free trapped students in Moore, Okla., following a tornado Monday, May 20, 2013. (AP Photo Sue Ogrocki)
Rescue workers dig through the rubble of a collapsed wall at the Plaza Tower Elementary School to free trapped students in Moore, Okla., following a tornado Monday, May 20, 2013. (AP Photo Sue Ogrocki)
Two men attempt to pry open a door on this car to check for victims in a business parking lot west of I-35 south of 4th Street in Moore, on Monday, May 20, 2013.A monstrous tornado roared through the Oklahoma City suburbs, flattening entire neighborhoods with winds up to 200 mph, setting buildings on fire and landing a direct blow on an elementary school. (AP PhotoThe Oklahoman, Jim Beckel)
Two men attempt to pry open a door on this car to check for victims in a business parking lot west of I-35 south of 4th Street in Moore, on Monday, May 20, 2013.A monstrous tornado roared through the Oklahoma City suburbs, flattening entire neighborhoods with winds up to 200 mph, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo/The Oklahoman, Jim Beckel)
Two men attempt to pry open a door on this car to check for victims in a business parking lot west of I-35 south of 4th Street in Moore, on Monday, May 20, 2013.A monstrous tornado roared through the Oklahoma City suburbs, flattening entire neighborhoods with winds up to 200 mph, setting buildings on fire and landing a direct blow on an elementary school. (AP PhotoThe Oklahoman, Jim Beckel)
Two men attempt to pry open a door on this car to check for victims in a business parking lot west of I-35 south of 4th Street in Moore, on Monday, May 20, 2013.A monstrous tornado roared through the Oklahoma City suburbs, flattening entire neighborhoods with winds up to 200 mph, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo/The Oklahoman, Jim Beckel)
The Moore Medical Center and vehicles lay damaged after a tornado moves through Moore, Okla. on Monday, May 20, 2013. (AP PhotoAlonzo Adams)
The Moore Medical Center and vehicles lay damaged after a tornado moves through Moore, Okla. on Monday, May 20, 2013. (AP Photo/Alonzo Adams)
This aerial photo shows the remains of houses in Moore, Okla., following a tornado Monday, May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP PhotoSteve Gooch)
This aerial photo shows the remains of houses in Moore, Okla., following a tornado Monday, May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo/Steve Gooch)
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The steeple of a church at South Janeway Avenue and SW 4th Street lays across the lawn after a tornado moved through Moore, Okla. on Monday, May 20, 2013. (AP PhotoAlonzo Adams)
The steeple of a church at South Janeway Avenue and SW 4th Street lays across the lawn after a tornado moved through Moore, Okla. on Monday, May 20, 2013. (AP Photo/Alonzo Adams)
This aerial photo shows the Moore Medical center in Moore, Okla., following a tornado Monday, May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP PhotoSteve Gooch)
This aerial photo shows the Moore Medical center in Moore, Okla., following a tornado Monday, May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo/Steve Gooch)
This aerial photo shows the remains of houses in Moore, Okla., following a tornado Monday, May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP PhotoSteve Gooch)
This aerial photo shows the remains of houses in Moore, Okla., following a tornado Monday, May 20, 2013. A tornado roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo/Steve Gooch)
A tornado moves past homes in Moore, Okla. on Monday, May 20, 2013. (AP PhotoAlonzo Adams)
A tornado moves past homes in Moore, Okla. on Monday, May 20, 2013. (AP Photo/Alonzo Adams)
A tornado moves through Moore, Okla. as northbound traffic on Interstate 35 stops at Indian Hills Road on Monday, May 20, 2013. (AP PhotoAlonzo Adams)
A tornado moves through Moore, Okla. as northbound traffic on Interstate 35 stops at Indian Hills Road on Monday, May 20, 2013. (AP Photo/Alonzo Adams)
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A tornado moves past homes in Moore, Okla. on Monday, May 20, 2013. A monstrous tornado roared through the Oklahoma City suburbs, flattening entire neighborhoods with winds up to 200 mph, setting buildings on fire and landing a direct blow on an elementary school. (AP PhotoAlonzo Adams)
A tornado moves past homes in Moore, Okla. on Monday, May 20, 2013. A monstrous tornado roared through the Oklahoma City suburbs, flattening entire neighborhoods with winds up to 200 mph, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo/Alonzo Adams)
A child is carried from the rubble of the Plaza Towers Elementary School following a tornado in Moore, Okla., Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometers) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP PhotoSue Ogrocki)
A child is carried from the rubble of the Plaza Towers Elementary School following a tornado in Moore, Okla., Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometers) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo/Sue Ogrocki)
Rescue workers dig through the rubble of a collapsed wall at the Plaza Tower Elementary School to free trapped students in Moore, Okla., following a tornado Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometers) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP PhotoSue Ogrocki)
Rescue workers dig through the rubble of a collapsed wall at the Plaza Tower Elementary School to free trapped students in Moore, Okla., following a tornado Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometers) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo/Sue Ogrocki)
A boy is pulled from beneath a collapsed wall at the Plaza Towers Elementary School following a tornado in Moore, Okla., Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometers) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo Sue Ogrocki)
A boy is pulled from beneath a collapsed wall at the Plaza Towers Elementary School following a tornado in Moore, Okla., Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometers) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo/ Sue Ogrocki)
A child is pulled from beneath a collapsed wall at the Plaza Towers Elementary School in following a tornado in Moore, Okla., Monday, May 20, 2013. (AP Photo Sue Ogrocki)
A child is pulled from beneath a collapsed wall at the Plaza Towers Elementary School in following a tornado in Moore, Okla., Monday, May 20, 2013. (AP Photo Sue Ogrocki)
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A fire burns in the Tower Plaza Addition in Moore, Okla., following a tornado Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometers) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP PhotoSue Ogrocki)
A fire burns in the Tower Plaza Addition in Moore, Okla., following a tornado Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometers) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo/Sue Ogrocki)
A boy is pulled from beneath a collapsed wall at the Plaza Towers Elementary School following a tornado in Moore, Okla., Monday, May 20, 2013. (AP Photo Sue Ogrocki)
A boy is pulled from beneath a collapsed wall at the Plaza Towers Elementary School following a tornado in Moore, Okla., Monday, May 20, 2013. (AP Photo Sue Ogrocki)
A child calls to his father after being pulled from the rubble of the Tower Plaza Elementary School following a tornado in Moore, Okla., Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometers) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on the elementary school. (AP PhotoSue Ogrocki)
A child calls to his father after being pulled from the rubble of the Tower Plaza Elementary School following a tornado in Moore, Okla., Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometers) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on the elementary school. (AP Photo/Sue Ogrocki)
This photo provided by KFOR-TV shows a house fire outside Moore, Okla., Monday, May 20, 2013. A monstrous tornado as much as a mile wide roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP PhotoKFOR-TV)
This photo provided by KFOR-TV shows a house fire outside Moore, Okla., Monday, May 20, 2013. A monstrous tornado as much as a mile wide roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo/KFOR-TV)
A woman carries her child through a field near the collapsed Plaza Towers Elementary School in Moore, Okla., Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometers) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo Sue Ogrocki)
A woman carries her child through a field near the collapsed Plaza Towers Elementary School in Moore, Okla., Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometers) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo Sue Ogrocki)
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A woman carries an injured child to a triage center near the Plaza Towers Elementary School in Moore, Okla., Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometers) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo Sue Ogrocki)
A woman carries an injured child to a triage center near the Plaza Towers Elementary School in Moore, Okla., Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometers) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo Sue Ogrocki)
A child is pulled from the rubble of the Plaza Towers Elementary School in Moore, Okla., and passed along to rescuers Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometers) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school.(AP Photo Sue Ogrocki)
A child is pulled from the rubble of the Plaza Towers Elementary School in Moore, Okla., and passed along to rescuers Monday, May 20, 2013. A tornado as much as a mile (1.6 kilometers) wide with winds up to 200 mph (320 kph) roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school.(AP Photo Sue Ogrocki)
This frame grab provided by KWTV shows a tornato in Oklahoma City Monday, April 20, 2013. Television footage shows flattened buildings and fires after a mile-wide tornado moved through the Oklahoma City area. (AP PhotoCourtesy KWTV)
This frame grab provided by KWTV shows a tornato in Oklahoma City Monday, April 20, 2013. Television footage shows flattened buildings and fires after a mile-wide tornado moved through the Oklahoma City area. (AP Photo/Courtesy KWTV)
A fire burns in the Tower Plaza Addition in Moore, Okla., following a tornado Monday, May 20, 2013. A tornado as much as a mile wide with winds up to 200 mph roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo Sue Ogrocki)
A fire burns in the Tower Plaza Addition in Moore, Okla., following a tornado Monday, May 20, 2013. A tornado as much as a mile wide with winds up to 200 mph roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo Sue Ogrocki)
This photo provided by KFOR-TV shows homes flattened outside Moore, Okla., Monday, May 20, 2013. A monstrous tornado as much as a mile wide roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP PhotoKFOR-TV)
This photo provided by KFOR-TV shows homes flattened outside Moore, Okla., Monday, May 20, 2013. A monstrous tornado as much as a mile wide roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo/KFOR-TV)
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A woman is pulled out from under tornado debris at the Plaza Towers School in Moore, Okla., Monday, May 20, 2013. A tornado as much as a mile wide with winds up to 200 mph roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo Sue Ogrocki)
A woman is pulled out from under tornado debris at the Plaza Towers School in Moore, Okla., Monday, May 20, 2013. A tornado as much as a mile wide with winds up to 200 mph roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo Sue Ogrocki)
This frame grab courtesy of KFOR TV shows the aftermath of a massive tornado as much as a mile wide with winds up to 200 mph roared through the Oklahoma City suburbs Monday, May 20, 2013. (AP PhotoCourtesy KFOR TV)
This frame grab courtesy of KFOR TV shows the aftermath of a massive tornado as much as a mile wide with winds up to 200 mph roared through the Oklahoma City suburbs Monday, May 20, 2013. (AP Photo/Courtesy KFOR TV)
This photo provided by KFOR-TV shows a car pile-up outside Moore, Okla., Monday, May 20, 2013. A monstrous tornado as much as a mile wide roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP PhotoKFOR-TV)
This photo provided by KFOR-TV shows a car pile-up outside Moore, Okla., Monday, May 20, 2013. A monstrous tornado as much as a mile wide roared through the Oklahoma City suburbs Monday, flattening entire neighborhoods, setting buildings on fire and landing a direct blow on an elementary school. (AP Photo/KFOR-TV)
Mary Dallin, gobernadora de Oklahoma, recorre el lunes 20 de mayo de 2013 el Parque de Casas Móviles Steelman Estates, que resultó duramente afectado por un tornado el domingo, cerca de Shawnee, Oklahoma. (AP Photo Sue Ogrocki)
Mary Dallin, gobernadora de Oklahoma, recorre el lunes 20 de mayo de 2013 el Parque de Casas Móviles Steelman Estates, que resultó duramente afectado por un tornado el domingo, cerca de Shawnee, Oklahoma. (AP Photo Sue Ogrocki)
John Warner observa el daño a la casa móvil de un amigo en el Estacionamiento de Casas Móviles Steelman Estates, destruido durante el tornado del domingo, cerca de Shawnee, Oklahoma, el lunes 20 de mayo de 2013. Vecindarios enteros fueron arrasados y edificios incendiados después de que un nuevo tornado de 1,6 kilómetros (una milla) de ancho cruzó el lunes por el área de Oklahoma City. (Foto APSue Ogrocki)
John Warner observa el daño a la casa móvil de un amigo en el Estacionamiento de Casas Móviles Steelman Estates, destruido durante el tornado del domingo, cerca de Shawnee, Oklahoma, el lunes 20 de mayo de 2013. Vecindarios enteros fueron arrasados y edificios incendiados después de que un nuevo tornado de 1,6 kilómetros (una milla) de ancho cruzó el lunes por el área de Oklahoma City. (Foto APSue Ogrocki)
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A resident who did not want to give his name, searches through the rubble of his mobile home in the Steelman Estates Mobile Home Park, destroyed by Sundays tornado, near Shawnee, Okla., Monday, May 20, 2013. The tornado that slammed into Oklahoma on Sunday is now blamed for two deaths. Authorities say two men in their 70s have been found dead in or near a mobile home park outside of Shawnee. (AP Photo Sue Ogrocki)
A resident who did not want to give his name, searches through the rubble of his mobile home in the Steelman Estates Mobile Home Park, destroyed by Sunday's tornado, near Shawnee, Okla., Monday, May 20, 2013. The tornado that slammed into Oklahoma on Sunday is now blamed for two deaths. Authorities say two men in their 70s have been found dead in or near a mobile home park outside of Shawnee. (AP Photo Sue Ogrocki)
John Warner surveys the damage near a friends mobile home in the Steelman Estates Mobile Home Park, destroyed in Sundays tornado, near Shawnee, Okla., Monday, May 20, 2013. (AP Photo Sue Ogrocki)
John Warner surveys the damage near a friend's mobile home in the Steelman Estates Mobile Home Park, destroyed in Sunday's tornado, near Shawnee, Okla., Monday, May 20, 2013. (AP Photo Sue Ogrocki)
Lee Hoyle, of Chickasaw Nation search and rescue, digs through the debris of a mobile home in the Steelman Estates Mobile Home Park, destroyed by Sundays tornado, near Shawnee, Okla., Monday, May 20, 2013. The tornado that slammed into Oklahoma on Sunday is now blamed for two deaths. Authorities say two men in their 70s have been found dead in or near a mobile home park outside of Shawnee. (AP Photo Sue Ogrocki)
Lee Hoyle, of Chickasaw Nation search and rescue, digs through the debris of a mobile home in the Steelman Estates Mobile Home Park, destroyed by Sunday's tornado, near Shawnee, Okla., Monday, May 20, 2013. The tornado that slammed into Oklahoma on Sunday is now blamed for two deaths. Authorities say two men in their 70s have been found dead in or near a mobile home park outside of Shawnee. (AP Photo Sue Ogrocki)
Maeghan Hadley, right, of One Day Ranch pet rescue, reaches for a kitten pulled from underneath the rubble of a mobile home destroyed by Sundays tornado in the Steelman Estates Mobile Home Park near Shawnee, Okla., Monday, May 20, 2013. (AP Photo Sue Ogrocki)
Maeghan Hadley, right, of One Day Ranch pet rescue, reaches for a kitten pulled from underneath the rubble of a mobile home destroyed by Sunday's tornado in the Steelman Estates Mobile Home Park near Shawnee, Okla., Monday, May 20, 2013. (AP Photo Sue Ogrocki)
Members of the Chickasaw Nation search and rescue group dig through debris, Monday, May 20, 2013, to locate a kitten buried in the rubble of a mobile home destroyed in Sundays tornado, in the Steelman Estates Mobile Home Park, near Shawnee, Okla. (AP Photo Sue Ogrocki)
Members of the Chickasaw Nation search and rescue group dig through debris, Monday, May 20, 2013, to locate a kitten buried in the rubble of a mobile home destroyed in Sunday's tornado, in the Steelman Estates Mobile Home Park, near Shawnee, Okla. (AP Photo Sue Ogrocki)
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Maeghan Hadley, of One Day Ranch pet rescue, checks over a kitten pulled from under the rubble of a mobile home destroyed by Sundays tornado in the Steelman Estates Mobile Home Park, near Shawnee, Okla., Monday, May 20, 2013. (AP Photo Sue Ogrocki)
Maeghan Hadley, of One Day Ranch pet rescue, checks over a kitten pulled from under the rubble of a mobile home destroyed by Sunday's tornado in the Steelman Estates Mobile Home Park, near Shawnee, Okla., Monday, May 20, 2013. (AP Photo Sue Ogrocki)
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