[quote=Shikaru]
They'd have to either:1. Pull off a headsho with a hollow-point bullet.or 2. Cut his head off or etc..
[/quote]

Jack lives in a moving fortress. It is filled with soldiers, and has multiple anti-tank firing stations. He'd get hit by heavy weapons-fire, and there wouldn't be enough left to call it a corpse. They'd have to bury him in a matchbox.