the real thing

You know those bullet-hole stickers that people put on their cars to make them seem like a bad-ass? I parked behind this truck outside a cafe today:

(there are at least 18)

I quickly took this photo with my cell phone (which is why the quality is so terrible) because I wasn't really sure if I wanted to be caught taking a photo by the guy who has real bullet-holes in the back of his truck.

What do you think the story is behind this?