is there the possibility:
The entire Terrorist Team that ever knew in detail about the Attack was killed.
After all of the 19 killed they could have included everyone that ever knew in detail of the scheme. Unless the CIA has evidence to show otherwise, I think it's POSSIBLE they are looking fo rthe non-existant.
Arguement for:
1/ 19 is enough to organise 4 simple hijacks.
2/ 7 Pilots are also enough to be self tought
3/ Money isn't an issue... (no bombs, no high-tech)
4/ Many were US residents
5/ Lack of warning from CIA due to ONLY 19 knew, so no leak!
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