Law enforcement work near the Pentagon after a suspicious vehicle forced multiple road closures Friday, June 17, 2011 in Arlington, Va. Roads in proximity of the Pentagon are closed to thru traffic ... more 
Law enforcement work near the Pentagon after a suspicious vehicle forced multiple road closures Friday, June 17, 2011 in Arlington, Va. Roads in proximity of the Pentagon are closed to thru traffic during morning rush hour Friday, June 17, 2011, as law enforcement personnel work near the Pentagon, after a man was detained early Friday morning with what authorities described as suspicious materials in his backpack. (AP Photo/Alex Brandon) less 
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Associated Press | Photo By Alex Brandon
Fri, Jun 17, 2011 11:00 AM EDT