Thursday, 3:30 AM. Las Vegas (southwest).
A car with two men in it comes over to a house. The driver gets out and argues with the homeowner, before the driver pulls a gun on the homeowner. The homeowner shoots the driver in the garage. A passenger gets out of the car and the passenger and the homeowner shoot at each other before the passenger runs away. The driver is dead, the passenger is in jail, and the homeowner is not.
This appears to have been part of a feud of some sort. Based on the fact the homeowner was approached by the driver and that the homeowner was not arrested, at this time I am classifying this as a defensive gun use unless we get countermanding information.