NAVAL AMPHIBIOUS BASE CORONADO (December 1, 2017) Cmdr. Nathan Fugate assumes command of Assault Craft Unit (ACU) 1. Fugate relieve Cmdr. Neil Krueger who took over command of ACU-1 in May 2016. The mission of ACU-1 mission is to train, equip, and deploy assault craft and crews to support amphibious ready group and maritime prepositioning force operations.