As the Brotherhood of Nod didn't have a Navy, the Global Defense Initiative possessed naval superiority. A Gunboat can fire one machine gun at enemy forces clearing for GDI's Navy to move on. Colonel J.C. Carter was presumed to be killed on a Gunboat at the Danube River in Hungary by some Obelisks of Light. Hovercrafts travel on water and land GDI reinforcements on beaches once all Nod presences have been cleared. The Hovercraft leaves the area after dropping off infantry or tanks. An Aircraft Carrier is the main hub for warplanes where they launch airstrikes against Nod forces in any area.