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Cmdr. Ryan T. Easterday, commanding officer of the Arleigh Burke-class guided-missile destroyer USS John S. McCain (DDG 56) waves to the Takanami-class destroyer JS Oonami (JS 111) as it makes its approach during divisional tactics while conducting integrated operations. McCain is assigned to Destroyer Squadron Fifteen (DESRON 15), the Navy’s largest forward-deployed DESRON and the U.S. 7th Fleet’s principal surface force.