I agree that they have no threats. And that 911s are not really prevented by Air Forces.

But I think you left out one significant point. The major reason that democracies such as NZ have no threats is the better world that we (all civilized nations) have created. A world where it does not profit one democracy to attack a neighbor. And most importantly a world where one powerful set of MoFos will rain down the forces of hell on you and destroy YOUR air force, your navy and whatever, if you invade one of their community. The US military. Don't forget that the reason NZ need not fear invasion or need an AF is because it HAS an AF, the USAF, for such contingencies.

-philw (take note, you land-grabbing Aussies)