EAST CHINA SEA (Dec. 3, 2020) Gas Turbine Systems Technician (Mechanical) 3rd Class Michael Carter, left, from Hanford, Calif., and Machinist Mate 3rd Class Jonathan Pipes, from St Louis, Mo., assess a simulated fire main rupture in a living space during an integrated training team drill aboard the Arleigh Burke-class guided-missile destroyer USS John S. McCain (DDG 56). 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)