Depending on the situation even the slightest hesitation can be fatal.
That is one very big thing that makes a police officers job so difficult IMO. Most don’t realize that.
I have come close to having to kill a goblin. It happened many years ago at an ATM on a brilliantly sunny Sunday afternoon in June. My young son was in his car seat jabbering and the young male goblin came off the main street in a long trench coat on a really hot day red alert#1, turned toward my truck without breaking eye contact with truck, red alert#2, kept one hand reaching inside his coat not revealing it, he was holding something, red alert#3.
I had already started my transaction with the ATM and reached into my glove box and pulled out my 9X18 Makarov and as I leaned back across the truck brought it up and visibly dropped the safety to the goblin, unbuckled my seat belt and was about to verbally challenge the closing goblin. He suddenly stopped dead in his tracks and didn’t move, eyes now down to the ground. About that time the machine spit my money and card out and I snatched them and floored it. Did I want to shoot, no, but had he continued closing I would have engaged him and was within seconds of doing so to protect my son.