Two MH-60S Sea Hawk helicopters, assigned to the Blackjacks of Helicopter Sea Combat Squadron 21, transfer cargo from the Military Sealift Command fast combat-support ship USNS Rainier during a replenishment at sea with the aircraft carrier USS Ronald Reagan. The Sea Hawk is used for logistics support, vertical replenishment, search and rescue and naval special warfare support. Ronald Reagan is deployed to the U.S. 5th Fleet area of responsibility.