I was impressed with your signature line ....""Travel is fatal to prejudice, bigotry, and narrow-mindedness." Mark Twain " and you will therefore sympathise I'm sure and be ope minded when I say that we also live in a world where people choose to ignore .....

Perhaps you should google "behavior pattern recognition " as well as "screening passengers by observation techniques" and look a little more at how Ben Gurion Airport .... possibly the potentially most dangerous target airport in the world and how they have reduced risks impressively before concluding on the issue.