Coito ergo sum wrote:So why do anything? Just don't even have security checkpoints at all, because right now it's 1970's style metal detectors and the odd pat down.
1970s style metal detectors detect the vast majority of weapons that might be used for aircraft terrorism, including the leatherman multitools that the 9/11 hijackers bought. The fact that it's older, proven technology does not make it obsolete, any more than the 1970s technology of most aircraft and jet engines makes them obsolete.
The fact is, the full body scanners offer at best a marginal improvement over metal detectors, at the cost of being a greater health risk.
Israel checks people while they are in their cars on their way into the airport - every car is stopped, and the passengers questioned, behavioral profiling techniques are applied to see if someone needs to be checked out further and if so, that vehicle is taken aside and searched. Once they get to the airport armed guards outside the terminal are trained to observe passengers as they move toward the doors, again looking for odd behaviour. At Ben Gurion's half-dozen entrances, another layer of security are watching. At this point, some travellers will be randomly taken aside, and their person and their luggage run through a magnometer. At the airline check-in desk a trained interviewer takes your passport and ticket. They ask a series of questions: Who packed your luggage? Has it left your side? Etc. - more behavioral profiling. Lines are staggered. People are not allowed to bunch up into inviting targets for a bomber who has gotten this far. At the check-in desk, your luggage is scanned immediately in a purpose-built area. Next, they have a body and luggage hand check.
I'd note that the U.S. used to do much of that stuff, like asking the questions about baggage. That was jettisoned in exchange for the TSA lines. The new scanners are not part of a trend towards greater air safety, just a trend towards more intrusive direct searching.
Of course, Israel wouldn't need all that extra security if they didn't have policies inviting terrorism - and to a lesser extent, that applies to the U.S., too.