Pentagon marks 10th anniversary of September 11, 2001

A large American flag is unfurled from the roof of the Pentagon at dawn in preparation for the 10th anniversary ceremony, September 11, 2011, in Arlington, Virginia. On September 11, 2001, highjacked American Airlines flight 77 crashed into the Pentagon, killing all 64 passengers on board and 125 in the Pentagon. UPI/Mike Theiler