Later in the film's climax, Batman uses the Bat in the fight to retake Gotham City from Bane and he uses the Bat to haul a fusion bomb away from Gotham City where it detonates over the ocean and presumably kills him. Later, while completing work on the Bat, Fox discovers that Wayne had fixed the autopilot function months before and may have escaped before the bomb detonated. In designing the Bat, Nathan Crowley approached it as if it were an actual military project, emphasising the need for it to "fit into the same family" as the Tumbler and the Batpod.