Assault Craft Unit TWO (ACU-2) is an Atlantic Ocean Maritime Prepositioning Force in the United States Navy operated under Naval Beach Group Two out of Naval Amphibious Base Little Creek, Virginia. ACU-2's force consists of Landing Craft Utility boats (LCU), Landing Craft Mechanized, Mark 8 boats (LCM), and Maritime Prepositioning Force Utility Boats (MPFUB). The sister unit of ACU-2 is Assault Craft Unit 1 in Naval Amphibious Base Coronado.