ARLINGTON, Va. (AP) -- Arlington County officials participated in a moment of silence to mark the 12th anniversary of the Sept. 11 attacks.
An honor guard presented the colors Wednesday at Arlington's Courthouse Plaza. A moment of silence followed at 9:37 a.m., when American Airlines Flight 77 crashed into the Pentagon, killing 184 people.
Arlington County is home to the Pentagon, and first responders from Arlington were among the first on scene that day.
Fire Chief James Schwartz said 40 percent of the county's current firefighters were on the staff 12 years ago.
Other ceremonies are scheduled Wednesday in Alexandria, Fort Belvoir and throughout northern Virginia.
First lady Michelle Obama is expected at Belvoir on Wednesday afternoon. Later in the day, actor and veterans' advocate Gary Sinise will perform at the base.
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