John Carpenter's Escape From L.A.

Ex-soldier and ex-convict Snake Plissken is back! Now there's a different President in power, and he declares the United States to be a land of moral superiority. And wouldn't you know it, Snake is once again "asked" to save the President's butt. This time however, he has to go into a new hell on Earth --- Los Angeles --- to retrieve a black box that controls the fate of the Earth. Thanks to a massive earthquake, L.A. is now an island used solely by the fascists to exile the Americans who are accused of crimes. Snake has ten hours to get the black box back... or die.