After looking at the video Bill, I now have to agree with you .. pretty much nothing offensive that I can see.   I will still question their effectiveness as the only real security can be made when one enters the tunnel to get on the plane. If we still let the bad guys steal or buy anything they need inside the gate the security is useless.

At the very least instead of the scanner that costs so much money, a sniffer inside the tunnel would be far more effective. They are quite inexpensive and extremely accurate for detecting explosives. Likewise assuming anyone at anytime can bring a sharp edged weapon on board regardless of entrance security, have people on board trained to handle it .. far more effective