https://www.theguardian.com/us-news/2023/may/03/oregon-police-gunshot-detection-shotspotter

SoundThinking, a gunshot detection company, worked with top police officials to secure a city contract, according to emails obtained by the Guardian

On 5 February 2022, police in Portland, Oregon, sent out a bulletin pleading with the public for information about a recent homicide case. Police had found Corey M Eady injured with several gunshot wounds, and the 44-year-old had died shortly after being taken to a hospital. “This is the 11th homicide in Portland this year,” the bulletin read. “All 11 have been by gunfire.”