I used to deer hunt on ft benning, ga. State required hunters to wear an orange hat and an orange vest. One day I was standing next to a large pine tree, smoking a cigarette, and a bullet hits the tree, right next to me. I looked around, saw nobody. Then 2 more bullets hit the tree...now I'm on the ground, yelling my head off, and a couple more bullets hit the tree. I pulled off the orange (I was wearing bdu's) got out my binoculars and looked around. Still didn't see anybody. I was hunting with my garand, and wearing a surplus garand ammo belt, fully loaded. I started shooting in the direction the shots were coming from, I shot about 50-60 rounds of FMJ's in the direction the shots were coming from, and was ready to start low crawling thru the brush in that direction, then whoever it was stopped shooting. Till then I was still yelling. I stopped shooting and yelling and made an exit out of there. Didn't put the orange back on till I got back to my truck. Never did see anybody, nor did I read anything in the paper about anybody getting shot (or shot at). I'm not saying I did the right thing, shooting back, but I'd do it again.
Another time hunting on ft benning, (in a different area) I ran into another hunter that told me he was color blind, and couldn't see the blaze orange we were required to wear. Scared the crap out of me.