Capt. Christin Masstracchio secures her life vest before a water-survival training course Nov. 4, 2014, at Minot Air Force Base, N.D. The course prepares and trains aviators on the proper techniques of survival if their aircraft goes down over water or enemy territory. Masstracchio is the 69th Bomb Squadron assistant flight commander. (U.S. Air Force photo/Airman 1st Class Lauren Pitts)