U.S. Marines with the Maritime Raid Force, 13th Marine Expeditionary Unit, conduct drills while aboard the USS Boxer during Sustainment Exercise (SUSTEX) off the coast of southern California, Jan. 17, 2016. SUSTEX is designed to reinforce the Boxer Amphibious Ready Group/MEU's execution of mission essential tasks in preparation for their upcoming deployment (U.S. Marine Corps photo by Sgt. Tyler C. Gregory/unreleased)
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Sgt. Tyler Gregory/13th Marine Expeditionary Unit
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