ELLSWORTH AIR FORCE BASE S.D. – (Left) Senior Airman Zachary Yoakam, 28th Operations Group survival, evasion, resistance and escape specialist and Staff Sgt. Brandon Dunphy, 28th OG SERE NCO in-charge prepare to demonstrate SERE water survival training during a base tour, July 30. The importance of the training is to ensure all Airmen who perform duties around water are properly trained on how to survive during an emergency. (U.S. Air Force photo/Airman 1st Class Corey Hook)