ATLANTIC OCEAN (Feb. 24, 2022) A Sailor aboard the guided missile destroyer USS Delbert D. Black (DGG 119) signals using semaphore to the Military Sealift Command replenishment oiler USNS John Lenthall (T-AO-189) during a replenishment-at-sea while underway for Surface Warfare Advanced Tactical Training (SWATT). Delbert D. Black is part of Destroyer Squadron (DESRON) 26 which supports Carrier Strike Group (CSG) 10. SWATT is led by the Naval Surface and Mine Warfighting Development Center (SMWDC) and is designed to increase warfighting proficiency, lethality, and interoperability of participating units. (U.S. Navy photo by Mass Communication Specialist 3rd Class Bryan Valek)