U.S. Air Force Staff Sgt. Lloyd Williamson, floor chief with the 94th Aircrew Flight Equipment section, cleans and inspects a pilot’s helmet at Langley Air Force Base, Va., Dec. 3, 2012. The pilot’s helmet, along with a parachute and survival kit, are considered lifesaving flight equipment. (U.S. Air Force photo by Staff Sgt. Katie Gar Ward/Released)