With out some "do gooder" changing the dynamic there would most likely be no shooting.
That's the part you don't seem able to comprehend. YOU are the idiot escalating the situation .
Besides, the Old Man is quite capable of dealing with his own situations.
Tell that to the two north central Iowa convenience store clerks who were shot in the head and killed by some douchebag, loser, psycho teenager a couple of years ago AFTER handing over the insured money, cigarettes, and everything else the kid demanded.....simply because he didn't want them to be able to call the cops.
While I don't think that one should insert one's self into the situation in every scenario, I'm also not ready to say we shouldn't EVER insert ourselves into a scenario.
All that being said, sometimes it does come down to a matter of conscience. And in that realm, the answer that each individual comes up with is the right answer for that person.