Life comes at you fast, that's why I don't worry about it. If I'd been standing right there, out walking the dog or sitting on the patio or whatever, and that guy had come running past me being chased by a cop, I could have had a gun right in my hand and it wouldn't have crossed my mind to start shooting.
When my house was robbed I was upstairs asleep with a .40 literally within arm's reach of me. If I'd heard them, would I have gone down and plugged them? Doubtful. More likely I'd have shouted, "Hey! Who's there!" and they'd have run off before I could even get down the stairs. Life is not like the movies. Rambo isn't real.
Today, it was over by the time we even realized we were in potential danger, and that's usually how these things go. I feel for the people who got their motorhome shot because THAT would be scary, especially since another shot went into the side of a truck and punched through the other side. They have a great story to tell around future campfires.
Every day people walk out their door and never walk back in. Car accidents come out of nowhere, heart attacks, whatever. Those are WAY more likely to kill you than some random crazy person running through your RV park to evade the cops. So I don't spend a lot of time worrying about things that could have happened but didn't.