150529-N-LG762-086 ATLANTIC OCEAN (May 29, 2015) Gunner's Mate Seaman Naathan Mooney, assigned to the amphibious assault ship USS Wasp (LHD 1), fires the MK-38 (Model 2) 25 mm machine gun system during a gunnery exercise aboard Wasp. (U.S. Navy photo by Mass Communication Specialist Seaman Zhiwei Tan/Released)