180506-N-LH273-0693 PACIFIC OCEAN (May 6, 2018) An MH-60S Sea Hawk helicopter attached to the “Blackjacks�? of Helicopter Sea Combat Squadron (HSC) 21 prepares to unload cargo onto the flight deck of Wasp-class amphibious assault ship USS Essex (LHD 2) while conducting a vertical replenishment during Essex Amphibious Ready Group (ARG) and 13th MEU exercise (ARGMEUEX). ARGMEUEX enhances joint integration, lethality and collective capabilities of the Navy-Marine Corps team through joint planning and execution of challenging and realistic training scenarios. (U.S. Navy photo by Mass Communication Specialist 2nd Class Adam Brock/Released)