MH-60 Seahawk helicopters delivers supplies on the flight deck aboard the amphibious assault ship USS Boxer (LHD 4) during a vertical replenishment with the Military Sealift Command fleet replenishment oiler USNS Rappahannock (T-AO 204) in the Pacific Ocean March 17, 2011. Boxer is supporting maritime security operations and theater security cooperation efforts in the U.S. 7th Fleets area of responsibility.