You know, I can actually see where TSA is coming from. Terrorists are not above using children, the elderly, and the feeble-minded, to further their ends. (Really. Neither the shoe-bomber or the underwear bomber were exactly rocket scientists.)
But... there are other ways to screen these people. And if the TSA can't figure that out, well, it's time for the TSA to go.
Onward and upward,
airforce