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Service members from the U.S Navy, Japan Maritime Self Defense Force (JMSDF), the Republic of Korea Navy (ROKN) and the Royal New Zealand Navy (RNZN) attend a mission planning brief for operation Sea Dragon, Jan. 28. Sea Dragon is a multi-lateral anti-submarine warfare exercise that improves the interoperability elements required to effectively and cohesively respond to the defense of a regional contingency in the Indo- Pacific, while continuing to build and strengthen relationships held between nations.