This is one of more than 30 firearms that have been recovered since the inception of the ShotSpotter program, back in March of this year.Three guns a month doesn't seem like so many. But then to get 30 guns off the streets, back in the old stop-and-frisk would have meant stopping 26,370 people!
How does ShotSpotter work in practice? Is a response mandatory or discretionary? What about false positives?