ELLSWORTH AIR FORCE BASE, S.D.-- Senior Airman Brandon Dunphy, 28th Operations Support Squadron Survival, Evasion, Resistance and Escape, or SERE, NCO in charge, trains 34th Bomb Squadron aircrew on water survival procedures, Dec. 1. The purpose of water survival training is to familiarize aircrew with scenarios they may encounter should their plane go down over water. (U.S. Air Force photo/Airman 1st Class Corey Hook)