LANGLEY AIR FORCE BASE, Va. -- Survival, Evasion, Resistance and Escape students prepare to perform a 20-man egress during water survival training here Aug. 25. The training, conducted by SERE specialists, teaches students how to endure life in a raft, as well as how to best utilize a survival kit. The course covers proper signaling, desalinating water, finding sustenance and how to properly release from a parachute drag. Pilots are required to complete water survival training every three years. (U.S. Air Force photo/Senior Airman Zachary Wolf)