200530-N-AJ005-1191 SOUTH CHINA SEA (May 30, 2020) Ensign Andrew Matyas, from Tuscon, Ariz., fires a Mark 38 25mm machine gun system Arleigh Burke-class guided-missile destroyer USS Mustin (DDG 89). Mustin is underway conducting operations in support of security and stability in the Indo-Pacific while assigned to Destroyer Squadron (DESRON) 15, the Navy’s largest forward-deployed DESRON and U.S. 7th Fleet’s principal surface force. (U.S. Navy photo by Mass Communication Specialist 3rd Class Cody Beam/Released)