SOUTH CHINA SEA (June 11, 2021) The Mk 110 57mm Gun Weapons System (GWS) is fired as part of a regular operational exercise aboard Independence-variant littoral combat ship USS Charleston (LCS 18). Charleston, part of Destroyer Squadron Seven, is on a rotational deployment, operating in the U.S. 7th Fleet area of operations 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 3rd Class Adam Butler)