Funny not 5 min ago I was looking at this, as I'm am in the compromised group.
http://www.airnow.gov/index.cfm?acti...enter=0&tabs=0
Just so everyone knows, it's very common that different NPS units have about as much in common as....lets say....Texas and Massachusetts.
Volunteers have been involved with the foundation document since day one, and the folks putting it together made sure that "The empowered volunteer" was a central part of the document's core, along with the 'unrestricted and unregimented" experience available on the AT. Finally, ATC's point of view on fees is well documented on this and other websites.