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211014-N-PH222-1270 SOUTH CHINA SEA (Oct. 14, 2021) Independence-variant littoral combat ship USS Charleston (LCS 18), left, pulls alongside Fleet replenishment Oiler USNS Big Horn (T-AO 198) prior to an underway replenishment. Charleston, part of Destroyer Squadron Seven, is on a rotational deployment, is on a rotational deployment in the U.S. 7th Fleet area of operation to enhance interoperability with partners and serve as a ready-response force in support of a free and open Indo-Pacific region. (U.S. Navy photo by Mass Communication Specialist 2nd Class Ryan M. Breeden/released)