VIRGINIA BEACH, Va. (Feb. 24, 2021) Capt. Tony DeFrias, right, commanding officer of Assault Craft Unit (ACU) 4, describes maintenance work during a visit by Royal Navy Rear Adm. Andrew Betton, Deputy Commander of NATO Joint Force Command Norfolk, left, on Feb. 24, 2021. Assault Craft Unit 4 is based out of Joint Expeditionary Base Little Creek, Virginia. (U.S. Navy photo by Ensign Matthew Starobin)