Is it just me or did the guy in the white approach the guy with the knife, then shoot him. There are a number of things that could cause some legal issues in this process, the guy in the white could be considered the aggressor, he had a 3rd party call 911 and then he left the scene.
I was outside when it happened. It was the pizza guy who hit his car! I'd call Dominos and file a complaint. He should at least get a free pizza to go with his bullet wound...