U.S. Air Force Chief Master Sgt. Darren Preiss, 1st Aircraft Maintenance Squadron, officially recognize members of the 94th and 27th Aircraft Maintenance Squadrons as dedicated crew chiefs at Langley Air Force Base, Va., Nov. 16, 2012. The ceremony was held to honor the designation of the crew chiefs to their assigned aircraft. (U.S. Air Force photo by Staff Sgt. Ashley Hawkins/Released)