The Nimagi Freedom Fighters have a hangar deep in the ground dug out from the side of a cliff by the echidna members of the tribe. It houses Axel's plane the X31-Phoenix his most prized possession. and weapons stolen from Eggman's lair along with the the weapons Ollet stolen from G.U.N .
The X-31 Phoenix
This is Axel's plane he is obsessed with it to the point that if there is a small dent in it he will flip out and try to break something over someone's head. only he is allowed to fly in this plane.