I'm a little concerned that he was trying to shoot around a door while hanging out of a moving trailer. You shoot only at what you can see and identify as a target was what I was taught. The exception might be someone in those bushes is shooting at me I guess I'll shoot back at those bushes. With some thought to what is behind those bushes such as a neighbors house etc.
The other issue is the woman in the truck that is reported to have been unaware that this was a crime. While I am skeptical of that, thinking it is more likely that she was aware but is more useful to prosecution of the main criminal as a witness than a co-conspirator. It is possible she thought they were just picking up a camper and it was all legit. That woman was just as likely to be hit by the trailer owners gunfire as the thief. That also seems like an argument that shooting without clear aim on the driver was poor judgment
I'm glad the thief is known and will be apprehended. Me I would like to think I would have been rational enough to just sit there looking out the window and telling police on the phone which way we were going. Never having been in the situation I don't know how I would have reacted but would like to think I would have been a little more thoughtful.
If we stopped and I was confronted by the thief the pistol in the hand not holding the phone would have been reassuring. If I was just kidnapped from my own driveway in my own camper I would say the perpetrator of that crime could be reasonably assumed to be a threat to my life if confronted. What happens next depends on them.
Heck if I walked out to see what was that noise and found someone stealing something from the garage or driveway I would assume the thief or thieves were a threat until proven otherwise. Best way to prove they are not a threat would be to lay face down, hands behind head and wait for the police to arrive.
One more reason to love the Scamp
with the big front window, better line of sight if trapped in your trailer while it is being stolen.