FILE - ShotSpotter equipment overlooks the intersection of South Stony Island Avenue and East 63rd Street in Chicago on Tuesday, Aug. 10, 2021. In more than 140 cities across the United States in 2023, ShotSpotter’s artificial intelligence algorithm and its intricate network of microphones evaluate hundreds of thousands of sounds a year to determine if they are gunfire, generating data now being used in criminal cases nationwide. (AP Photo/Charles Rex Arbogast, File)

