Dogdaddy:-
There is very good chance that despite what you say after all the Basic and Advance Training that the conditioned reflex sets in and you start acting/reacting to what you have been taught to do.
The man I spoke of that was lying in the yuck on the deck took his spot and began to function as he should. It wasn't until night had set in and there was a lull that he began to worry about getting on a boat again.
Many people ridicule the training but it is so ingrained that you don't have to stop and think as you might expect - you just do it. I have seen men do some very extraordinary things and it wasn't until the incident or whatever was over and they began to think about what they had done that the tremors etc. set in.
Sgtleo 