Disclaimer: Watching the video, I was a bit dismayed by the lack of knowledge the reporter seemed to have about plastic and METAL detectors. He was shocked that these knuckles had bypassed the checkpoints.
TSA doesn't have a body-scanner (that we know of) at Cleveland International so its METAL detectors wouldn't detect PLASTIC. Even if it could, that would mean a lot of people would lose a lot of valuable time getting to their gates delaying air travel even more and perhaps stifling our delicate economic growth.
The best advice I have is to be aware these sort of things do exist. You should follow the same rule I've always followed: If it looks like a weapon and acts like a weapon, then it more than likely is a weapon.
