150911-N-QO941-002 WASHINGTON (Sept. 11, 2015) A marker at the Pentagon Memorial in the hours prior to a ceremony to commemorate the 14th anniversary of the September 11, 2001 attack on the Pentagon. The ceremony is for families of victims of the attack and survivors.The Pentagon Memorial, located on Boundary Channel Drive in Arlington, Virginia, commemorates the 184 lives lost at the Pentagon headquarters and on-board American Airlines Flight 77 during the terrorist attacks. (U.S. Navy photo by Damon J. Moritz/Released)