I'm in the middle of an argument with someone in Nevada. He said a person came towards him with a knife and he presented his pistol and made the guy stand-down until law enforcement showed-up. I told him we had a fine line in Oklahoma where we can't brandish our weapon, if we pull it out, we have to use it. We can't use our firearm to deter the threat by means of scaring them away, or making a citizens arrest. I have looked and looked in the SDA Book for the vague ruling on this, but I can't find it now. Does anybody know where it is? What is your thoughts on the above scenario?