As part of the 9-11 "Memorial Walk" at Rock Island Arsenal, Ill., flags were placed in the ground by participants. Each flag represents a life lost resulting from the attacks on the United States on Sept. 11, 2001, and those who died in subsequent action in defense of the nation in Operation Iraqi Freedom, Operation Enduring Freedom, and Operation New Dawn. (Photo by Galen Putnam, ASC Public Affairs)
Page last updated Tue September 11th, 2012 at 00:00