At the risk of sounding cynical, don't hold your breath waiting for the Registered Traveler program to be implemented at most airports. As someone else noted in this thread, agency and job security is the most important thing for TSA, as it is for most if not all governmental organizations. Registered Traveler, like EPT, reduces the need for screeners and so will be resisted, just like TSA has been resisting the arming of pilots. TSA needs to protect its turf and budget, so any program or measure that decreases the number of warm bodies in TSA is a threat to its bureaucratic existence.