Sunnie Callow is presented a Certificate of Appreciation during a retirement ceremony held for her husband, U.S. Air Force Maj. Matthew Callow, on Feb. 27, 2015, Barksdale Air Force Base, La. Callow is a B-52H Stratofortress pilot assigned to the 11th Bomb Squadron and is retiring after 20 years of service. (U.S. Air Force photo by Master Sgt. Greg Steele/Released)