The four rules are not range rules. They’re life rules, active and appropriate everywhere, all the time. The odd situation in simulations-role-play, or “reality-based” training-calls for a refinement of mind-set with absolute, rigidly enforced rules that exist in that word only. It requires a secure area, a disarming station manned by one individual who’ll be present to check people in and out and to ensure that the training area is sterile.