Pointing fingers at the minimum wage airport security guards is the wrong direction. The CIA, FBI tracked these terrorists but they could not talk to each other with a $20 billion per year budget. And you think, these guards could have done better? We have the technology TODAY to collect the movements of any suspect anywhere in USA. It will cost only $200 million dollars by a private company or $10 billion by government. But it is here, now. All the government need to do is ask.