Not a big fan of mixing guns and alcohol (although it is unclear whether the shooter had been drinking) but I think this turned out quite well. It appears the shooter was well justified.
"Ramer said the husband showed restraint during the incident and only fired when he was threatened with a gun."
Not sure if that last paragraph is part of the story. Maybe a bunch of gang-bangers were trying to take over the party?
"Chandler police have arrested seven other men and plan to recommend that they be charged not only with robbery but with murder because the slayings occurred during the commission of another crime, Ramer said."
All in all, a happy ending.