ATLANTIC OCEAN (April 3, 2021) Machinist Mate 2nd Class Caleb Byrum, assigned to the Wasp-class amphibious assault ship USS Iwo Jima (LHD 7), examines a sample of F-76 fuel in the ship's oil lab during a replenishment-at-sea with the fast combat support ship USNS Supply (T-AOE 6), April 3, 2021. Iwo Jima is operating in the Atlantic Ocean with Amphibious Squadron 4 and the 24th Marine Expeditionary Unit (24th MEU) as part of the Iwo Jima Amphibious Ready Group. (U.S. Navy photo by Mass Communication Specialist 2nd Class Brenton Poyser)