anchor: Influences on achievement of sufficient procedures likely to be many, including the state of the art of detection technologies, number and militancy of potential threats to security, and the willingness of passengers, airline personnel, and airport personnel to accept different costs and forms of protection
positive: There are likely many procedures and factors that change, including detection technologies, the number of potential threats, and the willingness of passengers and personnel to accept security changes.
negative: There are few changes that need to be made as far as security procedures are concerned.