The problem is not the security screeners, it is their controllers at the top and their motive is political not practical.
We have heard it all before but non -one makes a logical decision in the US because they are afraid to be seen as soft on security. We all know the crash-axe story. In our company we are searched at the terminal entrance then we go to operations which is fully equipped with office equipment including several pairs of scissors with 4 inch blades. That is only part of it.
I once thought that the over-reaction to security would calm down after the situation had been stabilised. Instead it seems to have created a life of its own.