You obviously don't watch enough of those CCTV real-life footage shows on TV.
There was one on recently about thefts from airport security line checks. Here's how they do it:Two guys work the queue as a team. They spot someone (the mark) in the queue whose stuff they want to steal (big bag, laptop etc).
One of them gets ahead in the queue and the other gets in front of the mark. The one in the lead goes through the walk-through xray thing no problem and stands next to the conveyor (pretending to wait for bags, which he doesn't have).
The one in the front of the mark has something in his pocket which he knows will set off the alarm (coins, keys, whatever). He then times his walk-through perfectly; he waits until the mark has put his bag on the conveyor behind, then walks through. The alarm goes off and he gets asked to be searched which he willingly does. This holds up the queue and the poor mark has to wait in line whilst his bag goes through the xray machine and is collected by the awaiting accomplice.
I was absolutely amazed that people would have the balls (stupidity) to do this in the one place where there is more security and guns than any place on the planet.
Which is why I never put my bags through the XRay until it's MY turn to go through the metal detector. I've physically restrained the TSA (IOW, not let go...) from putting my stuff through before it was my turn.
Also, I always put my shoes through first and my empty laptop bag through last so my laptop and camera bag are bookended.
I fly (US Domestic) twice a week for 35-45 weekends a year and have never had an issue.




