Using new technology called the ShotSpotter Flex System, the New York Police Department has recorded more than 40 shooting incidents that no one called into 911, including one in which 24 gunshots were fired by a machine gun, the Wall Street Journal reports. In the first two weeks since the system went live, 300 high-frequency radio sensors have captured 55 instances of gunfire, 12 of which were reported to 911, said Jessica Tisch, deputy commissioner for information technology.
Police recovered ballistics evidence, such as shell casings, or found a victim at the scene in seven incidents. Revolvers don’t leave behind a shell cashing and the technology doesn't pinpoint the location where a gunshot was detected; it directs police to within 25 meters. NYPD has seen a 6 percent rise in shootings this year, compared with last year, from 200 to 212. The $1.5 million one-year program began March 16 in parts of the Bronx. It launched a week later in sections of Brooklyn. Tisch said it has been helpful in getting officers to the scene of shootings faster than a 911 call so they can interview witnesses and locate cameras that may have recorded the shooting or witnesses running from the scene.