The nase is where you start and end all missions. Your plane spawns here, and you take off and land. It is quite a compressed base, with slight differences between the 2 sides in the plastic war. They share in common a bottom ground, with a runway with flashing lights. Both bases have hangar and vehicle but they're different.
The allied have a green hangar, with domed roof. It has a red firetruck as ground crew, and a control tower.