Marines with Headquarters and Support Battalion, Marine Corps Base Smedley D. Butler, conduct 250 meter swim during an intermediate swim qualification course at Camp Foster, Okinawa, Japan, Oct. 25, 2016. The purpose of the course is to maintain proficiency, and enhance the Marines skills in water survival techniques. ( Marine Corps photo by MCIPAC Combat Camera Lance Cpl. Brooke Deiters)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
License: Licensed
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