170506-N-LC424-0931 PACIFIC OCEAN (May 6, 2017) Marines assigned to the 15th Marine Expeditionary Unit (15th MEU) clean weapons in the well deck aboard the amphibious dock landing ship USS Pearl Harbor (LSD 52). The America Amphibious Ready Group (ARG) and are conducting a composite training unit exercise off the coast of Southern California in preparation for a deployment later this year. (U.S. Navy photo by Mass Communication Specialist 3rd Class Tarra Samoluk/Released)