190310-N-HI376-1168 PHILIPPINE SEA (March 10, 2018) The Arleigh Burke-class guided-missile destroyer USS Curtis Wilbur (DDG 54) fires its 5-inch Mark 45 lightweight gun during a live-fire gunnery exercise while operating in the Philippine Sea, March 10, 2019. U.S. Navy warships train together to increase the tactical proficiency, lethality, and interoperability of participating units in an Era of Great Power Competition. (U.S. Navy photo by Mass Communication Specialist 2nd Class Jeremy Graham/Released)