U.S. Air Force Tech. Sgt. Bryan Fields (right) and Airman 1st Class Justin Wharff, 2nd Aircraft Maintenance Squadron crew chiefs, disconnect an external power unit from a 307th Bomb Wing (BW) B-52H Stratofortress prior to a mission on Aug. 28, 2014, Barksdale Air Force Base, La. On board the aircraft is Col. William Lyons, Assistant Vice Commander and the Director of Staff for 10th Air Force, who visited the 307th BW and flew his first flight in a B-52. (U.S. Air Force photo by Master Sgt. Greg Steele/Released)