161211-N-HQ940-021 ATLANTIC OCEAN (Dec. 11, 2016) The amphibious transport dock ship USS Carter Hall (LSD 50) approaches the fleet replenishment oiler USNS Big Horn (T-AO 198) for a replenishment-at-sea. Carter Hall is underway with the Bataan Amphibious Ready Group (ARG) participating in ARG/Marine Expeditionary Unit Exercise. (U.S. Navy photo by Petty Officer 2nd Class Nicholas Frank Cottone/Released)