OK, now we're being required to go through screening before we leave the airport? What's next?

http://www.nbcnews.com/video/nightly-news/53594630/#53594630 Who do they hope to catch? Ire from passengers for sure. How is this going to make me feel safer? It doesn’t look like it’s designed to catch people stealing luggage. If there’s a need to clear the airport quickly as in a bomb scare, they’d have to open them up and let everyone out without lookin’ ‘em over anyway.

I put this in Social, because it’s a bit scary, and a little humor helps, but I’m looking for genuine answers too.