That is incorrect. NWP has no authority to stop and ask anyone a question. They are a watch only program. They can't patrol, they can't follow someone claiming authority to do so, they can't harass. Everything he did once he got out of the car was wrong. There is no authority other than LE for that community. If they had a paid security guard at the gate that person has the authority to ask someone where they are going, who are they visiting, etc.
GZ was no different than any of his other neighbors except he seemed to want to control the whole community, tell people what to do, how to do, etc. You are told to observe and call if suspicious......that is it. If you still have doubt read the manual provided by LE. jmo