U.S. Airmen with the Bagram Airfield Honor Guard participate in the 455th Expeditionary Operations Group change of command ceremony at Bagram Airfield, Afghanistan, Aug. 3, 2015. The 455th EOG is responsible for all expeditionary flying and aeromedical evacuation operations for the 455th Air Expeditionary Wing. (U.S. Air Force photo by Tech. Sgt. Joseph Swafford/Released)