Katie Patchen waits as her dad, U.S. Air Force Lt. Col. Bryan Patchen, returns from a mission on Jan. 28, 2015, Barksdale Air Force Base, La. Patchen is an 11th Bomb Squadron B-52H Stratofortress instructor pilot and flew his last mission before retiring from the Air Force. (U.S. Air Force photo by Master Sgt. Greg Steele/Released)