the united states and am in the global entry program between swiping my passport, getting my picture taken, doing my fingerprinting, answering a few questions on this machine, and getting my bag and getting out, the process could only take a few minutes. what i avoid are the lines at regular customs. ed blum just flew in from panama. i travel frequently for business and i stand in line an hour. now it takes about two minutes. experts like former top israeli airport security official rafi says there s no substitute for an alert human screener looking for suspicious body language. there s a lot involved in identifying suspicious behavior. some of it is uncontrolled behavior as a result of the stress the terrorists are under. while they re on a mission. that is something that machines have great difficult to detect. ron also points out a machine won t detect a terrorist who has no previous criminal record and
ed blum just flew in with his family from panama. n but how much can safely be automat automated. experts like an israeli official says there s no substitute for a human screener looking for suspicious body language. some of it is uncontrolled behavior as a result of the stress that terrorists are under while they re on a mission. that is something that machines have a great difficulty to detect. reporter: he also points out a machine is not going to detect a terrorist who has no previous criminal record and is unthrown to the security system. terrorists like many of the 9/11 hijackers. passengers like them could go through these systems and not register a blip. they may simply change the way they do their jobs instead of