When I built my house in 1987 I installed a one of those infra red heat motion detectors to watch over my building supplies. How many of you are going to tell me that no such thing existed in 1987 ? Well mine was a Heath kit I had to assemble. I paid $147 for the privilege of putting it together. A few years later you could buy them for $16.00. Anyway I used a 12 battery, 2 meter radio and cw IDer to let me know it town if anyone was out at my building site at night. After I moved in, I installed it down the driveway and powered it with 120VAC and Power supply. Well one Saturday night/early Sunday morning my motion detector went off. Didn't think much of it at we frequently have dear come up the driveway. It resets in 4 minutes. 4 minutes later it goes off again. Well I had it wired so it turns on a light over the garage door. Now I am thinking it is 20 deg F outside and the wind is blowing 20mile an hour. So the deer are hunkered down in a hole somewhere trying to stay worm. So I jumped out of bed in the dark and put on slippers and grabbed the 30 cal carbine. I went outside and looked down the driveway and did not see anything but darkness. So I decided to fire a chasser down the driveway. Just before I squeezed off the first round I pulled off to the left into the woods. Just in case there was someone in my driveway. Pop, Pop, POP and back in the house I went thinking to myself that if there way someone down there that they probably would not come back. Well a few days later I was walking down the driveway to the road to get the mail. I see a broken piece of glass at the edge of the driveway. Pick it up and read "objects are closer than they appear" or something like that. It was a piece of a mirror. Then I look over at a tree beside the driveway and see where the bark is skinned off. So it appears someone pulled in my driveway in the middle of the night. The motion sensor turned on the light over the garage and beeped the sona alert tone in the house. After 4 minutes and the light went out they must have been backing out and set it off again. It appears they got off the driveway and broke their mirror on my tree. Anyway they were probably gone when I got out there. In any case, they did not come back.