180301-N-PM193-387 PACIFIC OCEAN (March 1, 2018) Fireman Gavin Lehman, left, and Aviation Boatswain’s Mate (Handling) 2nd Class Ricardo Sotofabela, both assigned to amphibious assault ship USS Boxer (LHD 4), walk the flight deck during a aqueous film forming foam sprinkler system test. Boxer is underway off the coast of Southern California for contractor sea trials. (U.S. Navy photo by Mass Communication Specialist 3rd Class Alexander C. Kubitza/Released)