190217-N-SH168-1283 PACIFIC OCEAN (Feb. 17, 2019) Cpl. Jose Castillorangel, from Los Angeles, assigned to the 11th Marine Expeditionary Unit (MEU), performs a back squat in the gym of amphibious assault ship USS Boxer (LHD 4) during a 500 and 1,000 pound club challenge. Boxer is underway conducting routine operations as a part of the Boxer Amphibious Ready Group (ARG) in the eastern Pacific Ocean. (U.S. Navy photo by Mass Communication Specialist 3rd Class John Luke McGovern/Released)