160414-N-TO519-390 ATLANTIC OCEAN (April 14, 2016) The fleet replenishment oiler USNS Big Horn (T-AO 198) refuels both the amphibious assault ship USS Wasp (LHD 1) and USS Whidbey Island (LSD 41) during a replenishment-at-sea. The Wasp Amphibious Ready Group is underway participating in Amphibious Ready Group/Marine Expeditionary Unit Exercise. (U.S. Navy photo by Mass Communication Specialist 2nd Class Nathan Wilkes/Released)