Rick,
what would you think if you were out in the wilderness and a drone flew a hundred feet over your campsite? You did have a permit to be at that site and you WERE 100 feet from that lake right? Probably be a felony to shoot at one, they might even be able to locate you and shoot back. A few drones along with the cameras should help prevent crime and injury in the federal lands, maybe a satelite link?
Sorry for the hijack.

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These are my own opinions based on wisdom earned through many wrong decisions. Your mileage may vary.