PHILIPPINE SEA (March 14, 2021) Gunner's Mate 3rd Class Lucas Ronollo, from Philadelphia, remotely fires a Mark-38 25mm machine gun aboard the Arleigh Burke-class guided-missile destroyer USS John S. McCain (DDG 56) during a live-fire gunnery exercise. John S. McCain is assigned to Task Force 71/Destroyer Squadron (DESRON) 15, the Navy's largest forward-deployed DESRON and the U.S. 7th Fleet's principal surface force. (U.S. Navy photo by Mass Communication Specialist 1st Class Jeremy Graham)