251118-N-JJ672-1259 AT SEA (Nov. 18, 2025) – The Republic of Korea (ROK) Chungmugong Yi Sun-sin-class guided-missile destroyer ROKS Wang Geon (DDG 978) travels aft of Arleigh Burke-class guided-missile destroyer USS Dewey (DDG 105) during the Maritime Counter Special Operations Exercise (MCSOFEX) with the ROK Navy Nov. 18, 2025. Dewey is forward-deployed and assigned to Destroyer Squadron (DESRON) 15, the Navy’s largest DESRON and the U.S. 7th Fleet’s principal surface force. MCSOFEX is an exercise that promotes regional security cooperation, maintains and strengthens alliances, and enhances interoperability with the ROK Navy. (U.S. Navy photo by Mass Communication Specialist 2nd Class Oscar Diaz).