September 11th Ceremony, Dover AFB
Staff Sgt. Christopher D. Houston, 436th Security Forces Squadron patrolman, and Staff Sgt. Matthew P. Varchetto, 436th Civil Engineering Squadron firefighter, raise the flag during the 9/11 Memorial dedication ceremony at the Air Mobility Command Museum, Dover Air Force Base, Del., Sept. 11, 2013. The memorial, which incorporates two pieces of steel from World Trade Center tower one, a rock from the United Airlines Flight 93 crash site and a block from the damaged portion of the Pentagon, was unveiled at the ceremony. (U.S. Air Force photo/David S. Tucker)