A Marine from Engineer Service Company, Combat Logistics Battalion, 4th Marine Logistics Group, holds his pack and rifle above his head during the 25-meter pack-swim portion of the Marine Corps water survival training program basic qualification at Great Lakes Naval Station, Ill., March 21, 2015. The program employs water survival skills designed to reduce fear, raise self-confidence, and develop Marines with the ability to survive in water. (U.S. Air Force photo/Tech. Sgt. Benjamin Mota)
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