About 20 years ago I was hunting in the mountains on public land. Lots of fog......ground was wet and you didn't make much noise. I was creeping along a trail when I caught movement off to my right. Thru the fog I saw the outline of a deer....looked like it was rubbing at a tree...working it real good. I raised my rifle...open sights....put the sights on the chest area and put my finger on the trigger.....and then .....and only then, did I realize that I was pointing my rifle at a man. He was bent over struggling with his gear....had taken off his blaze orange (if he ever bothered to put it on) and had on a tan shirt and dark pants. The way he was bent over, he looked like a deer. I didn't have any blood left in my body....obviously I had lowered my gun by then and I announced myself by clearing my throat. I moved on down the trail and started shaking like hell. At that time, I was LEO. I questioned myself on muzzle discipline and safety for quite some time. Thank god I realized I wasn't looking at a deer.
I usually don't hunt fog any more. That guy without blaze orange is a nut.