Well they seem to have put enough pieces together to run a training exercise with the same details as 9/11 on the same day, as well as warn the President of the

Well they seem to have put enough pieces together to run a training exercise with the same details as 9/11 on the same day, as well as warn the President of the attack a month earlier. My guess is that compartmentalization was given as an excuse in order for the government to expand power during a time of 'crisis'. Today they lie to you about what the NSA does, 10 years ago it was lying to you about what caused 9/11, including lying about the memo, and the training exercise. Remember that before the memo and the training exercise were public knowledge that 'no one could have predicted 9/11'.