Sailors aboard the Arleigh Burke-class guided-missile destroyer USS Gravely (DDG 107) prepare lines in order to transport supplies from the Military Sealift Command fleet replenishment oiler USNS Kanawha (T-AO-196) during a replenishment-at-sea. Gravely is conducting an exercise as part of independent deployer certification. (U.S. Navy photo by Mass Communication Specialist Seaman Adam Austin/Released)