180421-N-AV754-0386 MEDITERRANEAN SEA (April 21, 2018) The Arleigh Burke-class guided-missile destroyer USS Winston S. Churchill (DDG 81) fires its Mark 45 5-inch gun during a live-fire gunnery exercise. Winston S. Churchill is deployed in the U.S. 6th Fleet area of operations in support of maritime security operations. (U.S. Navy photo by Mass Communication Specialist 3rd Class Evan Thompson/Released)