I listened to the Cop call out on the video- do you think he was too quiet?

You can see that he opened the door with a gun in his hand. I'd agree that I'm not sure he made a threatening gesture with it, but isn't answering the door just holding it, pretty aggressive after not once but twice the Deputy pounded on the door and loudly announced that it was the Sheriff's office? The deputy has been told there's domestic disturbance going on that is getting out of hand. He pounds and announces twice that he is the police. The guy answers the door holding a gun.

I can see this being tragic, but saying the officer was out of control? I'm not comfortable with that at all.