U.S. Air Force Lt. Gen. Bruce Litchfield, commander of the Air Force Sustainment Center, listens to Senior Master Sgt. Dwayne Hill, 439th Supply Chain Operations Squadron centralized repair facility flight chief, during a briefing at the 735th Supply Chain Operations Group on Langley Air Force Base, Va., Oct. 24, 2012. Litchfield visited the 735th SCOG to discuss the impact it has on the Air Force. (U.S. Air Force photo by Senior Airman Racheal Watson/Released)