Keywords: US Navy 090424-G-6464J-014 A landing signal officer assigned to Beachmaster Unit 2 directs landing craft air cushioned vehicles from Assault Craft Unit (ACU) 4 to their landing zones to disembark soldiers and marines.jpg en MAYPORT Fla April 24 2009 A landing signal officer assigned to Beachmaster Unit 2 directs landing craft air cushioned vehicles from Assault Craft Unit ACU 4 to their landing zones to disembark soldiers and marines from Canada Chile Brazil Peru and Uruguay onto a Florida beach during an amphibious training exercise U S Coast Guard photo by Petty Officer Seth Johnson/Released 2009-04-24 090424-G-6464J-014 Navy http //www navy mil/view_image asp id 73980 U S Coast Guard photo by Petty Officer Seth Johnson PD-USGov-Military-Navy Naval Station Mayport Beachmaster Unit Two LCAC-37 ship 1991 LCAC-89 ship 1997 Assault Craft Unit 4 Signal flags |