INDIAN OCEAN (June 27, 2021) Command Senior Chief Donald Alvarado, from Tucson, Ariz., scans the horizon while aboard Independence-variant littoral combat ship USS Charleston (LCS 18) during a replenishment at sea exercise with Sri Lanka navy Advanced Offshore Patrol Vessel SLNS Sayurala (P-623) as a part of Cooperation Afloat Readiness and Training (CARAT) Sri Lanka. In its 27th year, the CARAT series is comprised of multinational exercises, designed to enhance U.S. and partner navies' abilities to operate together in response to traditional and non-traditional maritime security challenges in the Indo-Pacific region. (U.S. Navy photo by Mass Communication Specialist 3rd Class Adam Butler)