180228-N-ZL062-076 WATERS SOUTH OF JAPAN (Feb. 28, 2018) The guided-missile cruiser USS Antietam (CG 54) fires its aft 5-inch 54-caliber gun during a gunnery exercise (GUNNEX). MultiSail is a bilateral training exercise improving interoperability between the U.S. and Japanese forces. This exercise benefits from realistic, shared training enhancing our ability to work together to confront any contingency. (U.S. Navy photo by Mass Communication Specialist 3rd Class Sarah Myers/Released)