A U.S. Navy MH-60S Seahawk helicopter assigned to Helicopter Sea Combat Squadron (HSC) 23 delivers supplies during a vertical replenishment between Military Sealift Command fast combat support ship USNS Bridge (T-AOE 10), not pictured, and amphibious dock landing ship USS Comstock (LSD 45) in the Persian Gulf May 17, 2011. Comstock was under way supporting maritime security operations and theater security cooperation efforts in the U.S. 5th Fleet area of responsibility.