Template:6:20 a.m.-7:48 a.m. Hijackers Arrive at Airports and Board Flights; Computer Screening Program Fails to Stop Them

6:20 a.m.-7:48 a.m. Hijackers Arrive at Airports and Board Flights; Computer Screening Program Fails to Stop Them
All the alleged 9/11 hijackers reportedly check in at the airports from where they board Flights 11, 175, 77, and 93. According to the 9/11 Commission, nine of the 19 hijackers are flagged by the CAPPS system before boarding Flights 11, 175, 77, and 93. In addition, Mohamed Atta was selected when he checked in at the airport in Portland, for his earlier connecting flight to Boston. All of the hijackers subsequently pass through security checkpoints before boarding their flights.