Nevertheless, FBI information since that time indicates patterns of suspicious activity in this country consistent with preparations for hijackings or other types of attacks, including recent surveillance of federal buildings in New York.
The FBI is conducting approximately 70 full field investigations throughout the US that it considers Bin Ladin-related. CIA and the FBI are investigating a call to our Embassy in the UAE in May saying that a group of Bin Ladin supporters was in the US planning attacks with explosives
Immediatley detain, as many as we can, know matter how far along their investigation, anybody related to the "70 full field Investigations" Question them extensively, until they tell us what they know, If they don't answer their questions, ship them back to where ever they came from.
I imagine at least some of these 70 investigations, involved some of the 9/11 hijackers.
Of course this is all Hindsight, but the question that Hortland posed can only be based upon hindsight.