So your answer to my initial question is “Yes. I believe that it is a reasonable assumption that all of the evidence of a gunshot is carried away by the shooter

So your answer to my initial question is “Yes. I believe that it is a reasonable assumption that all of the evidence of a gunshot is carried away by the shooter.” That’s a fascinating position! Based on how difficult it is to find any evidence whatsoever, would you conclude that gunshots are essentially inconsequential 91% of the time? If I believed that, I would advocate for the legalization of recreational firearm discharge in populated areas, since obviously they rarely actually cause any noticeable issue. Edit: A tech company going “Beep boop loud noise! Give us more public funds for our technology that we refuse to explain!” is not the same thing as an actual report of gunfire to me. As for what I expect the police to do? Nothing. Literally nothing at all, anywhere at any time. They’re not obligated to, and in my experience, that’s what they usually do. Nothing. I forgot to add “witnesses and complainants” as something that could be considered evidence of gunfire, but I’m assuming they can also be carried away