Agreed on trusting you instincts. However I’d dispute the risk % associated with the display of the knife. Two scenarios. Either the guy is a threat or he is not. If he is not, then there was going to be no confrontation regardless and the issue is moot. If he is a threat, there again 2 possibilities. Either he is deterred i.e. we have achieved a positive outcome, or the threat remains i.e. they were going to engage no matter what – but even then we still have a choice to use our weapon or not depending on additional factors. Still facing danger after the display is unlikely imo as most assailants do look for victims and not opponents. If he persists, he is either carrying a greater power/reach weapon, is UTI and/or not alone i.e. they were always going to engage regardless of us showing the knife or not. Still unlikely imo but again we can still attempt to deescalate by dropping the knife. The very initial engagement may be higher but we haven’t backed ourselves into a corner we can’t get out of.