Researchers have found a way to allow people who keep their... dignity while at an airport, and none of that racial profiling, being on the no fly list for no reason, being allowed to keep wearing your shoes, and not being suspected of carrying a bomb under your jacket, and all that. And maybe you're allowed to keep that bottle of water.
Thanks to the magic of FAST, which measures your human behavior and your natural signals such as your heart rate, eye movement, and even if you're fidgeting. The theory goes that if you're a bad person and you're carrying a bomb or you were going to make your own or something, you'd be nervous, or at least look like you'd have something to hide. So these sensors can detect that and basically turn the airport into a passive line of defense against these evildoers, which is how it should have been in the first place.

so they will train their operatives to be perfectly calm.
it MIGHT slightly reduce the risk but not by much. especially since terrorists will be calmer knowing that there is less threat of detection.

Oh, I'd doubt it. If you are doing something wrong in the eyes of society (even if YOU believe in the cause... which in the case of Al Qaeda-- let's not talk about this now), you'd still be nervous because well, you're strapped with a bomb up your arse. How can anyone be calm with a bomb up their bum?

Maybe you'd be worried you wouldn't have as much virgins as bin Laden promised.

Which means, you won't fly to heaven and get your promised 70 virgins... or whatever it was.
EDIT: Ah, ninja'd

Fidgetting, increased heart rate, temperature changes and subtle facial expressions... the characteristic marks of a terrorist.
Or a nervous flyer.
Or someone sick

Well, they shouldn't be allowed on planes anyway!

Or someone being nervous they'll look nervous at the airport security checkpoint.

Especially if they happen to have an MP3 on their player that they downloaded illegally, they could well be executed on the spot!

Technically maybe, but the fact that your death will cripple this airport (and plenty of others too, even if just from fear of another attack) for a quite long time will maybe play in your favor when you will meet your creator (be it Allah, God, Cthulhu or whatever you believe in).
Speaking of it, several synchronised attacks attacks on the airports can cause.....bah, screw it.
I don't want to be met by several FBI agents who will "just ask me a few questions".

They'd also like to take a look at your bum, to see if you're carrying anything... external.

Great, now knowing this people are going to be nervous about 'knowing its there and trying not to be nervous about it'. Meanwhile calm Terry Wrist sneaks past and get everyone.
If it helps, wonderful, but I'd like to know the number of false positives it gets.

What about Al Kyder?

That was just for you (and any other Chaser fans) to see if you would spot it :)