“There are thousands of ways to attack, but if you put all of the resources at the checkpoint to make that bullet proof, [terrorists will] say thank you very much and go someplace else to get in, so you have to secure the entire environment at a basic level and then upgrade in an unexpected, unpredictable way,” Hawley said. “If they say the checkpoint is all buttoned down, then the attack comes through the perimeter, the attack comes in front of the airport, there is a [shoulder-fired rocket] attack.” - Congressional Quarterly

He seems to be saying, “Don’t worry too much about our sloppy and inefficient checkpoint screening  because something a lot  worse could happen.” Wow. I do agree that the TSA is good at being “unpredicatable” and I’d love to be able to “say thank you very much and go someplace else” at most airports.