We already have. I dont' recommend hubris as a strategic perspective. I prefer the Andy Grove perspective: Only the paranoid survive.
It won't take a truckload of smallpox to make a mess of our capabilities. Add to that a cutoff of Arab oil, some Chinese adventurism in Taiwan and Colombia, perhaps even sponsoring action in Mexico, North Korea, Albania, and Iraq...
I am not a big fan of bravado, especially when the nation's ammo stores are so depleted. It's still too early for that.
Bravado tonight is understandable...sort of a "neener, neener" to the news media and the "experts."
I have always expected to have troops in Afghanistan for at least a year. This is going to be a long war. Geraldo will probably get plent of stories.