Airmen from the Ellsworth Air Force Base Honor Guard perform the flag folding at the POW/MIA and 9/11 Remembrance Retreat Ceremony in front of the 28th Bomb Wing Headquarters on Ellsworth Air Force Base, S.D., Sept. 9, 2011. The ceremony was held to commemorate those lives lost in war-time and the terrorist attacks on September 11, 2001. (U.S. Air Force photo by Airman 1st Class Kate Thornton/Released)