160921-N-HP188-115 ATLANTIC OCEAN (Sept. 21, 2016) Gunner's Mate 3rd Class Emily Miller, assigned to the amphibious assault ship USS Bataan (LHD 5), prepares to clean a MK-38 25mm machine gun system after a live-fire exercise. The system is used for ship self defense to counter High Speed Maneuvering Surface Targets. Bataan is conducting Amphibious Squadron 8 and 24th Marine Expeditionary Unit integrated training. (U.S. Navy photo by Mass Communication Specialist 3rd Class Mutis A. Capizzi/Released)