Unjustified manslaughter. The shooter was in no iminent threat, and should have called the police (based on the account given in the report). Unless family members were in there, he had no reason to go in and shoot a person. In this case, calling the police would have been a better idea than going into a gunfight (and thoseof you who know how I think know that this is not the way I usually lean). There is not enough information in the story to even begin to pass judgement, so I shall reserve further commentary.