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U.S. Marine Corps photo by Sgt. Austin Hazard/Released 130405-M-HZ646-462.JPG
Apr 15, 2013
Capt. Jon Mueller, 22nd Marine Expeditionary Unit assistant intelligence officer, swims the length of the training pool with a waterproofed pack at Marine Corps Base Camp Lejeune, N.C., for annual swim qualification April 5, 2013. The unit is constantly training to maintain a high state of readiness. (Marine Corps photo by Sgt. Austin Hazard/Released)
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