ATLANTIC OCEAN (April 19, 2021) The guided-missile destroyer USS Winston S. Churchill (DDG 81) fires a MK-45 MOD 4 5-inch 62 caliber lightweight gun as part of a live-fire demo. Winston S. Churchill is operating underway in the 2nd Fleet area of operations in support of naval operations with the aircraft carrier USS Gerald R. Ford (CVN 78). (U.S. Navy photo by Mass Communication Specialist 3rd Class Katie Cox)