Unless your background involves using x-rays to examine luggage filled with property - which it DOES NOT, I can easily tell based upon your post - then you have NO idea what your talking about. Sorry. I have worked with more than a few TSOs where were x-ray techs in a previous life, and going on what they said, its not even close. Argue all you wish, but its a pointless argument. When you have some experience with what I am talking about, lets talk. On the same note, I am not even remotely qualified to work any x-ray, interpret any image, outside of what I do... And jtodd is not correct: please read a few court decisions. Our system of courts have ruled that bag checks to resolve potentially suspicious items are valid based only upon what is observed on the x-ray. It does not matter if there ends up being no prohibited item, despite what you may think. And while that bag is being checked, the passenger remains at the checkpoint, also upheld by our courts. So the statement, ", an innocent person was detained without cause", is a flat out lie, or proof of ignorance, as our courts have stated there is cause to conduct such screening. If you don't like it, then get the laws changed. Until then, too bad. But I can not state often enough; please understand what your talking about. Oh, I am sure here on this site people will cheer you for your post. But that is meaningless, and stupid. Sorry.