[Team Sergeant]

Actually calling 911 would be the last thing on my mind, even at 64. First I'd arm myself and then I would confront the threat, if the situation allows I'd dial 911 (I'm single) and drop the phone on the floor. Given where I'm standing at the moment I might yell that I am armed, but I don't know how to speak Spanish.

So the guy is in his basement and he has access to firearms. That in itself speaks volumes. Where do you keep readily accessible firearms? I know mine are not in the basement. As a DA I'd check to see if he has firearms down there, a safe etc. If not it might have been a setup.

I have access to a few firearms in my house, a .45 and a .223. I would never give up a .223 and use a .22 (or .45) in any situation if the .223 was working.

I've never heard of someone "downsizing" in a gunfight unless the primary weapon was not working. This guy changed guns (4 times) to kill slowly, deliberately and with pleasure.