Forty years ago, when my best friend ran a gun shop and did reloading for the local police, I had let the air out of a deer-poacher's tires (didn't hurt the tire, just loosened the valve stem), and he saw me. The game warden had told me he couldn't get there fast enough so I should take a photo of any vehicles on our property and if possible let the air out of a tire so they couldn't leave before he got there.
He saw me crouching by his vehicle, shouted, and shot his gun in the air, then ran towards me and I beat it back to the house. Once I got there I closed the driveway gate and let my German Shepherd out, then called the police. He was standing at the gate, and yelled to the house "get out here or I'm gonna shoot your dog". Then I called my friend.
The guy kept yelling and I told him I'd called the cops.
Just a few minutes later, there was a loud engine roar of a car coming down the road, then I see my friend's station-wagon coming sideways down the road, tires smoking as it came to a stop. My friend, who always wore a poncho and cowboy hat, leaps out of the vehicle, lays a Mini-14 across the hood of his car on a bipod, and says "Hit the ground, mf'r - NOW....!!!"
The guy did as he was told, and laid right down in the driveway...
NOW I'm brave...

and go outside with my friend Mr. Mossberg.
My friend is walking up to kick the guys rifle out of his reach, Mini-14 in hand, and the guy looks pretty scared.
Then, we hear police sirens, and a police car pulls up, deputy getting out. The guy actually looks relieved now to see a cop.
As he starts to get up, the cop said to my friend "Hey, Jonathan, how are you doing...?" and the guy looks less relieved. Then he says "Sir, I think I'd stay right there for a minute while I talk to these boys..." (we were both in our early 20's).
After he took a brief report, he let the guy stand up, took his drivers license and recorded the information, and he told him:
"Sir, you need to know something. These boys are good kids, and I don't like it when bad things happen to good people. They are probably upset now, and to be honest, so am I. I'm thinking that if these guys so much as go out to take a [leak], and the wind blows it onto their pant leg, the first thing they are going to think of is you, and the way you behaved today. So you might want to spend all your time being sure nothing happens to upset either of these boys or any of their family or friends, but that would mean being near them, and personally, I think you'd be better off staying far away from them. Jonathan is a really good shot, and his friend here probably is too, so I'd make it really, really far. I'm going to be checking on them periodically, and you had really better hope that nothing happens that upsets them, and you had really better PRAY that nothing happens to upset me...
Now just to show I'm a nice guy, I'll radio for a tow truck to come reinflate your tires.
Do you have any questions...?"
The guy said "No sir," and walked back to his vehicle."
Too bad that kind of thing doesn't happen any more, but I'll never forget seeing my friend jump out of his car and lay that Mini-14 over the hood of his car.

Jonathan passed away a few years ago from years of smoking, but he was a good buddy.