On the morning of the September 11 attacks , several of the hijackers were selected by CAPPS . Wail al-Shehri and Satam al-Suqami were selected for extra screening of their checked bags , before they boarded American Airlines Flight 11 at Logan International Airport . Waleed al-Shehri was also selected , but since he had checked no bags , CAPPS selection had no effect on him . Mohamed Atta was selected by CAPPS when he checked in at Portland International Jetport
American Airlines Flight 11
American Airlines Flight 11
Computer-Assisted Passenger Prescreening System