I got knocked out cold by a tree in boot camp. Damn thing came out of nowhere.
We got woken up at 3am by the drills and had to run so that we could hurry-up and wait somewhere else. I was running behind a guy that was about 5 inches shorter than me (who was taking lots of short cuts off the path) ... so he made it under the branch, and I smacked right into it.
All I remember is staring up at the stars with about 6 guys asking me if I was alright .. and all I could think was ... "sh!t I'm gonna get chewed out for laying around