In a defensive scenario the opposition has created the situation. By escalation, I mean to change one’s own posture or response. I can be a victim. I can attempt escape (sometimes wise). Or I can use force. I’m not intending to suggest that you create the situation to begin with if that is what it appears. Otherwise, I will grant that there are gun owners who only shoot paper, and only intend to ever shoot paper. And some few who delude themselves that they might be able to incapacitate or maim instead of kill. But at the end of the day, it has one purpose – to kill.