Just some food for thought on this subject...............
This isn't a pro-TSA or anti-TSA post. I'd prefer to see it disbanded since it's a group of non-LE doing LE work and their training standards are pretty piss poor.
I used to be in a position where I got to operate a scanner that's similar, but probably a little less "techish" than what TSA uses. I don't know, it's been almost ten years ago. That particular scanner, if the operator was competent, could pick out a whole lot of stuff and identify it, but every so often a bag would come through that had enough stuff in it and the image was pretty much a scrambled mess.
When I recently flew out to the West Coast, and I wasn't happy about just because of the TSA issue, I was actually pleasantly surprised. I had my camera bag with me as my carry on. Along with the camera and two lens, I had stashed in my netbook, assorted cords, IPhone mobile charger, camera cleaning supplies and a mess of assorted crap. That bag went through three TSA checkpoints. In the two checkpoints that the bag didn't get a second look, the TSA staff that I interacted with or observed came across as professional and competent without any of the horror stories that are so common.
The bag did get pulled at the third checkpoint and searched. Again, the staff came across as professional, but they were all young and while they all seemed competent, they came across as rookies who seemed like the only reason they were all working together was because it was a Saturday at a small airport and the older TSA folks with seniority got weekends off just because of that seniority.
With those scanners, there can be some of the operator's subjectiveness thrown into the equation when it comes to pulling a bag to be hand searched and I can tell you right now that when I ran a scanner (BTW, it was non TSA, non federal government
), I didn't want to be that guy
Lesson here is if you don't want to get stopped at the TSA check point with your camera bag and have it tossed, then don't pack a lot of crap into it. Then again, if I fly again, my bag will probably still be packed full of crap that I don't want on my checked bag. Their turf, their rules unfortunately.