I think I will be unpopular with this comment, but I think quad copters could be the demise of flying rc airplanes. I had one flying in my backyard last year. it wasn't just flying over either, it was about 1o feet. The neighbor thought it was funny. I informed him if he did it again, his copter would meet its demise. I just think people are entitled to their privacy. Unfortunately, I don't think he was breaking any laws, because I don't own the air, but he was being extremely careless and unsafe.