You do realise that John Wayne himself regretted making that
movie, don't you? If it helps you sleep any better at night,
replace John Wayne with Wyatt Earp, Audie Murphy, Sylvester
Stallone or whoever - it really doesn't matter. 
Well if you don't know the limits imposed by OSA, then you're
the one showing that you're talking from inexperience. I don't
fancy doing time just so that I can impress you. I am fairly
certain that any SAF man would agree with this sentiment - in fact,
many of us here already know that the recent drowning case became
public knowledge as the result of what was posted on this very
forum.
You can talk to Israeli NCOs all you want - if you believe that
gives you better information than having actually worked with them,
I really can't take you seriously.
Been there, done that. Hell, another guy and I had a company
pinned down for two hours sitting on top of a knoll with a couple
of M16s and a few boxes of ammo, and hell, they knew where we were
after we took about ten of them down. Mind you, this was on an
exercise with MILES gear, but the umpires did a great job of
counting the number of kills. The ones who stayed standing in the
first ten seconds were the ones who got hit first. By the way, we
were firing from a seated position, resting the handgrip on one
knee, and I'm trained in demolitions, not sniping.
Indeed, you need to control your fear to ensure survival.
However, I put nit to you that the objective of controlling your
fear is to retain the capacity to properly assess the situation -
what the SAF calls a thinking soldier - instead of following drills
by rote. That's how you survive - you use your head instead of
firing blindly.