I took the 4X5 Cyclone Senior to the old Pere Marquette railroad grade to shoot a couple of infrared shots of a 40' tall concrete coal tower from the days of steam. I set my tripod/camera up on the edge of the new paved bike and walking trail where the tracks used to be. Framed the shot, took a spotmeter reading then grabbed the shutter release cord. As I was just ready to trip the shutter and wham. I was hit from behind from a high speed biker. It was the last thing I remember until I regained consciousness. He hit me so hard it flip me into the air and slammed my the back of my head on the paved trail. When I came to there were three teenagers standing over me and one bike laying on the pavement. I thought I was paralyzed since all I could move was my left hand. After about four or five minutes I could finally get to my knees, but still couldn't walk for about another 4 to 5 minutes. They picked up my poor old camera and tripod and helped me to my truck. It took me a couple of minutes to figure out which way my cottage was, and is actually only right across the lake from where I was at. Yup, the wife put me in her car and off to the hospital we go. Two bloody elbows, banged up left hip, big knob and cut on the head, plus a concussion. 4 1/2hrs later I'm a little sore, but back home thank God. The worst part of it was I had no idea they were coming up behind me and I just couldn't figure out why I was on the ground, bleeding and couldn't move. Yes, photography can be a very dangerous business. I'm starting to think I might be too old for this hobby. If I'm not too stiff and sore in the morning I'm heading back out to finish the job, but I'm going to be watching behind me very closely.