The gunfire logged by ShotSpotter overshadows the number of officially reported felony gun crimes by more than 2 to 1. More than one-half of the incidents detected by the network have involved multiple rounds of gunfire. In 2009 alone, ShotSpotter captured more than 9,000 incidents of gunfire. That number has fallen by 40 percent in recent years as gun homicides have declined sharply.Via The Washington Post
The story is an interesting read. I'm not sure which is more surprising, that there are so many shooting incidents or that so many go unreported by citizens.