its not, you can't, the thing is you can't defend them without how you die, you can't train people how to avo to die, you can only train them how to avoid it, so it doesn't really matter if you get fired or not, but they show you the drills and you have to do them to the best of your ability  the blank rounds are only there to  the conditions, now this is why they've got these laser  got laser sights all over the body, helmet and torso and the actual weapons got a laser on top and you get, if you get near one of these things you go  dead and your out, and you can actually simulate 