Marine units primarily deploy from warships using boats, landing craft, hovercraft, amphibious vehicles or helicopters. Other uses include hydrofoils, hovercraft and fast ferries. Ducted fan propulsion is used in aircraft, airships, hovercraft, and fan packs. These include helicopters, auxiliary power units, boats and ships, tanks, hovercraft, and stationary equipment. Access is only by hydrocopter, hovercraft or helicopter. These are common in helicopters and hovercraft. The films show the Peacekeepers utilizing armored trucks, submachine guns, pistols, and armed hovercraft. He also worked at applying linear motors on the Tracked Hovercraft until its cancellation. The Iranian Navy operates multiple British made and some Iranian produced hovercraft. He is retrieved and brought aboard Morpheus's hovercraft, the "Nebuchadnezzar". Vickers-Armstrong also built the VA-3 hovercraft. The operator, Hovertravel, claims it is the world's only commercial passenger hovercraft. Only recently has the modern Russian Navy begun building new classes of military hovercraft. There are many types in today's navies including hovercraft. The Proteus was used on the SR.N4 "Mountbatten"-class cross-Channel hovercraft.