Once, while in the military on a three day exercise with little/no sleep I fell asleep while running in formation (returning from an exercise). I woke up three

Once, while in the military on a three day exercise with little/no sleep I fell asleep while running in formation (returning from an exercise). I woke up three hours later when the instructors drug us out of our tents. I won't swear that I was "truly" asleep, but I have no memory of the last three miles of that run, nor of climbing into the fartsack.