A U.S. Navy naval air crewman checks to see that an MH-60S Seahawk helicopter assigned to Helicopter Sea Combat Squadron (HSC) 23 is clear of the flight deck during a vertical replenishment between Military Sealift Command fast combat support ship USNS Bridge (T-AOE 10) 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.