Concerned4Calif Apr 15, 2019 09:37 AM Shots Fired Early Saturday? There are many Edhat postings about gunfire. Some may be gunfire but some is probably something else like fireworks or automobiles backfiring. There is a public company called ShotSpotter (SSTI) . They install technology to listen for gun shots 7 days by 24 and can send police to the spot of the gunshots in just a few minutes. Some 90 cities have already installed this and nearly all have expanded it to more area after using it.