There has got to be more to the ATV storie. I mean put your self in the thief's position. If some one has got a gun trained on me I am problie gonna freeze and wait for the cops or haul ass. The way this storie sounds to me is the guy just walked up to the thief and shot him, no warning or anything.
You can bet that if someone is messing around my house or in my back yard I will be investigating armed. But I would not shoot unless I feared for my life. You have got to draw the line. Sure all of my stuff is insured, but what is saying the thief will stop with just the stuff in the yard. I will protect what is mine period.