Again, my point was not to assign blame, because I don't know anything about the events. I was just pointing out that your inital comment contains a non sequitur:
> You can certainly make the argument that the FBI, CIA, and NSA ...dropped the ball on 9/11, but NORAD did not. NORAD's primary goal has never been to stop terrorism/hijacking from occurring on passenger planes within the United States, but rather to warn of enemy planes and missiles from _entering_ the US.
If you wanted to excuse NORAD, you should have appealed to the FAA's actions, not their "primary mission".
> You can certainly make the argument that the FBI, CIA, and NSA ...dropped the ball on 9/11, but NORAD did not. NORAD's primary goal has never been to stop terrorism/hijacking from occurring on passenger planes within the United States, but rather to warn of enemy planes and missiles from _entering_ the US.
If you wanted to excuse NORAD, you should have appealed to the FAA's actions, not their "primary mission".