Rudy and Guns

I know I'm a little late on this one (boy, the blogosphere moves fast), but is anyone taking Giuliani's claim reagrding gun rights seriously? He said:

I also think that there are some major intervening events — September 11, which cast somewhat of a different light on the Second Amendment, doesn’t change it fundamentally but perhaps highlights the necessity of it.

That's just ridiculous. Does he think some pistol packing citizen would have shot down the planes on 9/11? Or does he think that we should be permitted to carry heat on airplanes to stop terrorists?

How exactly does 9/11 change one's view of the 2d Amendment? It is scary to think that a potential president thinks there are significant parallels between national defense and self defense. If I believe my neighbor is building up a collection of guns, should I be able to invade his house, occupy it, and instill my personal values on him and his family? Especially if I've asked him to destroy those guns on a number of occasions? In Rudy's world, why not?