SOUTH CHINA SEA (Feb. 8, 2021) Sailors simulate combating a fire in the ship's classroom during an integrated training team drill aboard the Arleigh Burke-class guided-missile destroyer USS John S. McCain (DDG 56). John S. McCain is assigned to 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 2nd Class Markus Castaneda)