Anyone know how it's done for fact? Let's say I'm in Wash DC and stupid me is flying around over the various streets. Some DC metro cop sees me and stops to question. What can the cop do about it? Given the fact that a DC metro cop can't enforce federal law, but park services can, which, if either, is authorized to write FAA citations? It's like the old days of CB radio when cops were powerless to enforce the rules. Until Clinton gave them that authority.