[GeronL]

Oh, and by the way, that tank with a GAU-8 on it was tried already. They called it the Sergeant York

He wasn't talking about using it for air defense. =o)

[Wombat101]

True, but it never could sustain enough firepower to be effective. If you wanted to use it in ground combat, it would have to be a moving ammo can that would need to be very close to a target (and thus, exposed) to be of any use.

Again, he's talking about turning an Abrams into a "Swiss Army Knife" type of vehicle.

It works just fine the way it does.