161211-N-HQ940-006 ATLANTIC OCEAN (Dec. 11, 2016) The fleet replenishment oiler USNS Big Horn (T-AO 198) prepares for a replenishment-at-sea with the amphibious assault ship USS Bataan (LHD 5). Bataan 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)