I worked for the TSA for about 6 months a few years ago. They convince employees that catching a knife from some traveler who forgot to put it in their checked baggage is a huge win and that somehow we saved the day yet again. Happened on a daily basis.

Our biggest catch while I was there: one day we caught a guy with a sword. The guy obviously didn't know what he was doing, apologetic, and confused. Of course, our managers talked it up as a big win for TSA security. Can you imagine a terrorist trying to take over a plane with a sword?