Reply #13: How about [View All]

[gandalf]

following normal airspace security routines, intercept hijacked aircrafts not only after 40 minutes?
Putting more fighters on alert?
Put suspected terrorists (and there were a lot of them closely watched during a Malaysia terror summit; Atta and his gang were closely watched in Germany years before the attacks, and the CIA was informed) on a watchlist and arrest them when they enter the US?

Act on the warnings of flight school owners of mysterious muslims?

"President Bush has just spent the night at Colony Beach and Tennis Resort on Longboat Key, Florida. Surface-to-air missiles have been placed on the roof of the resort. <Sarasota Herald-Tribune, 9/10/01> (source: www.complete911timeline.org)

Warn the airlines and airports to heighten security? They had received no special warnings.

There were lots of missed opportunities. Had some of them been used, 9/11 could probably have been prevented.

I suggest you look at the 9/11 timeline. You might learn something.