Tina, first of all IF the TSA had stopped ANY credible threats they would have been lauded on TV and Internet to prove their worth.
Second of all so far the most credible way to stop terrorists was taken away back in 1973.
Back then all pilots were allowed to carry pistols, had numerous back ground checks and so were many of the stewardesses or flight attendants. Now any person can get those jobs it seems. Used to be before 1973 there were very few hijackings and if it did happen generally the airlines also had security on each flight, armed. But then in this day an age honor and honesty can be bought with few thousand dollars it seems. Also we need to go to the way Israel does it, you walk through with carry ons and if there is anything that can go boom, it does,, and you with it. Oh and they have one of most extensive terrorist identification systems around. Taking my shampoo , as i am from Indiana and American while flying to where ever, makes little sense or frisking a toddler or geriatric person when presented with credible proof of not being a risk. Right now you can get groped for free at airport boarding. Add disco ball and cheap watered down drinks and call it a disco!