To me this is the prime reason that the TSA is useless. There are a half dozen ways to get explosives and other stuff THROUGH TSA checkpoints, not to mention the other dozen exit points into the airport. Anyone determined enough, will get through. About the only person they have a chance in stopping is a random lay person who just decided this morning. And they don't even seem to be able to stop that person. But looking at all the other risks in life, I'll take my chances.