So, I live in Western Montana and go in and out of our tiny airport frequently for work and pleasure. 7 times out of 10 if I land after 10:00pm there is a cop waiting without lights on as I land. After I land they will turn on their lights and follow me at a distance. A couple days ago, they drove by my hangar as I was putting away my bird. Didn't get out, or stop. Just drove by slowly. When I land the other local strips at night I have experienced the same thing. I love cops and appreciate the job they do, but I don't like feeling like I'm being watched or singled out just because I fly. Are they looking for drug traffickers? We are close to the Canadian border. Are they bored and want to see a late night landing? Any law enforcement pilots out there? Our town is tiny, I will probably just ask him what's up. But I was wondering if this is common in other areas.