Flight 175 Hijackers Check In at Airport, Board Plane; No Additional Passenger Security Scrutiny

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All five Flight 175 hijackers reportedly check in at Boston's Logan Airport, pass through a security checkpoint, and board their plane during this period. The five hijackers are Marwan Alshehhi, Fayez Ahmed Banihammad, Hamza Alghamdi, Ahmed Alghamdi, and Mohand Alshehri. (9/11 Commission 8/26/2004, pp. 89)

The FAA has a program in place called CAPPS, which selects passengers for more thorough security screening based on suspicious behavior such as buying a one-way ticket or paying with cash (see (6:20 a.m.-7:48 a.m.) September 11, 2001).

Although reports claim that between two and five of the Flight 175 hijackers have one-way tickets, none are selected by CAPPS. (Sperry 4/24/2002; US Congress 9/26/2002; US Congress 9/26/2002; Goo and Eggen 1/28/2004; 9/11 Commission 8/26/2004, pp. 18)

Two of them have problems answering security questions at the ticket counter (see (6:20 a.m.-6:53 a.m.) September 11, 2001).

At the security checkpoint, all five would pass through a walk-through metal detector, and an X-ray machine would screen their carry-on luggage. But Logan Airport has no video surveillance of its checkpoints (see 1991-2000), so there is no documentary evidence of exactly when they go through, or how they are processed. Jennifer Gore, the young supervisor overseeing the checkpoint, is later unable to recall seeing any of them. The Globe and Mail will explain, "She was trained to look for metal bits in bags and in clothes, not people." (Saunders et al. 9/7/2002; 9/11 Commission 7/24/2004, pp. 2; 9/11 Commission 8/26/2004, pp. 18)