It makes more sense when you learn the pistol was inoperable. They had rendered it inoperable for a previous court case.
It was all a bluff!
When the crime lab examined it, they documented it was could not be fired.
That makes it even worse, in my mind. You don’t threaten deadly force unless you are absolutely prepared to use it. What’s the plan if somebody steps up to the challenge (e.g. pulls their own gun)?
I’m not saying they wouldn’t have been justified in using deadly force had somebody from the crowd (or the crowd as a whole) rushed them or tried to firebomb their home, I’m saying that if you’re advertising that you’re prepared to go there, you better be ready to go there. If you aren’t, and somebody calls your bluff, that might just mean your life.
When the crime lab examined it, they documented it was could not be fired.They fixed it and then noted that it COULD be fired.