Marines with the 7th Engineer Support Battalion carry their gear while swimming 25 meters during water survival training at Camp Pendleton, Calif., Dec. 18, 2017. Marines are required to have their gear during the swim to simulate if they would have to cross a small body of water with their gear in hand. ( Marine Corps photo by Cpl. Joseph Sorci)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
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Keywords: 1st, 7th, battalion, engineer, esb, marines, mlg, qual, support, survival, swim, training, water