170710-N-DZ075-030 SOUTH CHINA SEA (July 10, 2017) Gunner’s Mate 1st Class Michael Perry, left, assigned to the Arleigh Burke-class guided-missile destroyer USS Stethem (DDG 63), instructs U.S. Naval Academy Midshipman 2nd Class Jake Rozelle during a M240B machine gun qualification course. Stethem is on patrol in the South China Sea supporting security and stability in the Indo-Asia-Pacific region. (U.S. Navy photo by Mass Communication Specialist 2nd Class Ryan Harper/Released)