With WAAS it could be 8,000 airports. Third, the public will see fewer delays because the system will safely allow more aircraft to occupy a given airspace without increased risk. Fifth, our airlines will achieve significant savings in terms of both equipment and operating costs, as they shift to satellite-based navigation. For aviation applications, we need the accuracy WAAS will provide. I know hikers in Colorado use it.
Recreational boaters use it.
Ships navigating on high seas use it, and they get to their destination more efficiently and with less costly. Emergency vehicles use it. If you want to go to Disney World, it tells you to turn left at the interstate. It might even save a few arguments between spouses on where to turn when you're lost. Beyond, aviation, long-term the benefits to the public of WAAS are as far as the imagination can stretch.