Marine Corps Staff Sgt. Sergio L. Macias with Instructional Training Company, Support Battalion, Recruit Training Regiment (RTR), instructs a recruit with Company G, 2d Recruit Training Battalion, RTR, on staying afloat at Marine Corps Recruit Depot San Diego, Calif., March 1, 2016. Macias taught basic swim techniques to recruits to help them continue water survival training. ( Marine Corps photo by Lance Cpl. Robert G. Gavaldon/Released)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
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Keywords: 2nd, battalion, company, golf, qual, recruit, rtbn, support, swim, tank, training