Dave, I may indeed be boring you, but you fascinate me. Wannabes always fascinate me.
I never claimed to have combat experience, but what I do know is that the training I DO have, compliments of the US Army light infantry, is quite a bit more realistic than a couple "tactical rifle classes."
You want stress? Try coordinating a company size attack LIVE fire, all the while trying to juggle actually being tactically correct and accomplishing the mission while simultaneously trying to keep a bunch of 19 year olds from shooting each other accidentally.
No, no one was trying to kill me...but if one of those kids had shot someone, my Batallion Commander would have made me WISH I were dead...