point of order: Terry v. Ohio is about unreasonable searches and is not predicated on "probable cause." Terry v.Ohio established that an officer could, absent the higher bar of "probable cause" search an individual if he could articulate specific facts that lead to a reasonable suspicion that said person has, is, or is about to commit a crime AND the officer has a reasonable belief that said actor is armed or dangersous.

Unfortunately, it seems LE is constantly pushing the limits of this and basically frisk anyone they stop. More people need to be aware of their rights and demand government agents adhere to the protections afforded citizens.

Carry on......

I could see an ID requirement for picking up a camping permit, however as long as the person who is camping has no violations I do not think they have to provide ID for the officer.  Now if they committed some sort of infraction there may be a regulation that says that an ID must be presented but I am unaware of any. It is somewhat similar to a driver's license. You have to have it while you are driving, however, you do not have to present it unless you are stopped by a law enforcement officer for a violation.

I think that most people would provide an ID to an officer if they said they were walking around and checking camping permits but it would not be required.

Keep in mind the officer wont always be happy if you say you don't want to provide an ID if there was no reason for a stop. They either might get mad that people don't listen to them or they might start to think that you are hiding your ID so as to conceal something, you have a warrant for your arrest for example.