Lt. Gen. Chris Nowland, 12th Air Force and Air Forces Southern commander, transfers command of the 28th Bomb Wing to Col. Gentry Boswell at a change of command ceremony at Ellsworth Air Force Base, S.D., June 4, 2015. Boswell returned to Ellsworth after serving one year as director in the Air Force Operations Division at the Pentagon. (U.S. Air Force photo by Senior Airman Hailey R. Staker/Released)