Hank T's postulate applies...I presume... so how do you see if there's a weapon?
I have an 18V flashlight at my door, that I always shine on whomever I need to within 200' of my front door. It is bright enough to keep them from seeing me or where I'm at because I'm standing behind my steel front door. I can see their hands (and can notice any weapons).
Or course, in NM, we don't have a castle doctrine, but if a weapon is pointed at me, or in process, I can fire in self defense to stop the deadly threat.
I would be ticked if they DA knew who the perps were and would not prosecute. What is the DA's reason for this?