PHILIPPINE SEA (July 11, 2020) The Arleigh Burke-class guided-missile destroyer USS Ralph Johnson (DDG 114) fires a Mark 38 25mm machine gun during a live-fire exercise. Ralph Johnson is part of the Nimitz Carrier Strike Group and is deployed conducting maritime security operations and theater security cooperation efforts. (U.S. Navy photo by Mass Communication Specialist 3rd Class Anthony Collier)