правила пассажирских аваиаперевозок начали меняться задолго до 2001 года:
1970 - sky marshals on selected flights 1973 - luggage screening 198x - introduction of X-ray and magnetometer screening of luggage and passengers 1995 - photo ID required for all passengers over 18 1996 - only ticketed passengers in the secure areas 1996 - selected luggage spot-checks and passenger interviews 1997 - no waiting in the car at the curbside in front of the terminal
US aviation security timeline before 2001
1970 - sky marshals on selected flights
1973 - luggage screening
198x - introduction of X-ray and magnetometer screening of luggage and passengers
1995 - photo ID required for all passengers over 18
1996 - only ticketed passengers in the secure areas
1996 - selected luggage spot-checks and passenger interviews
1997 - no waiting in the car at the curbside in front of the terminal