I had to pass through a full body scanner on my way back to the US recently. Due to unusual circumstances I was able to sit around for a few minutes and look at the screen afterwards....I looked Dead Sexy. I know because not only could I see everything, my 'picture' stayed on the screen until the next person went through. I feel sorry for anyone who travels wearing Tighty Whities.
I don't think these scanners really add an element of security. Sure, you *may* catch a guy with a box cutter, but that isn't going to work again now that the passengers on the plane know what will happen if they don't fight.
There are too many easier ways to conceal/obtain weapons on a plane for that sort of feel-good check to really make a difference.
If you really wanted to take away any chance of having a plane blown up the solution is simple and cheap: Dogs.
You have sniffy-dogs check every single person and every single piece of gear prior to it being loaded. If they don't have any explosives or any large metal objects (read guns) then no other security checks really matter.
Osama Bin Laden could fly Southwest with evil intent and he would not be able to do anything. No ID checks, Security Pat-Downs, Backscatter X-rays, etc. necessary.
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"Socialism is a philosophy of failure, the creed of ignorance, and the gospel of envy, its inherent virtue is the equal sharing of misery." - Winston Churchill
"All men dream: but not equally. Those who dream by night in the dusty recesses of their minds wake in the day to find that it was vanity: but the dreamers of the day are dangerous men, for they may act out their dream with open eyes, to make it possible." Seven Pillars of Wisdom, T.E. Lawrence
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