An MH-60S Sea Hawk helicopter assigned to the Black Knights of Helicopter Sea Combat Squadron 4 transports ammunition from the aircraft carrier USS Ronald Reagan during a vertical replenishment with the Military Sealift Command dry cargo and ammunition ship USNS Carl Brashear. Ronald Reagan departed Joint Base Pearl Harbor-Hickam after participating in Rim of the Pacific Exercise 2014. RIMPAC is the world‚Äôs largest international maritime exercise and takes place in and around the Hawaiian Islands.