Commercial system - www.shotspotter.com (In Baghdad prior to 2009) https://venturebeat.com/2009/04/29/shotspotter-refines-gunshot-sensing-tech-with-qinetiq-buy

Commercial system - www.shotspotter.com (In Baghdad prior to 2009) https://venturebeat.com/2009/04/29/shotspotter-refines-gunshot-sensing-tech-with-qinetiq-buy/ https://venturebeat.com/2009/04/29/shotspotter-refines-gunsh... (2013 Washington, DC article with tech overview) https://www.washingtonpost.com/investigations/shotspotter-detection-system-documents-39000-shooting-incidents-in-the-district/2013/11/02/055f8e9c-2ab1-11e3-8ade-a1f23cda135e_story.html https://www.washingtonpost.com/investigations/shotspotter-de... (Baltimore, MD 2018 installation) https://www.baltimoresun.com/news/crime/bs-md-ci-shotspotter-20180601-story.html https://www.baltimoresun.com/news/crime/bs-md-ci-shotspotter... Recent DC news https://wtop.com/dc/2020/07/court-docs-officer-was-called-away-minutes-before-shooting-of-davon-mcneal/ https://wtop.com/dc/2020/07/court-docs-officer-was-called-aw... "The D.C. police’s Shotspotter system was turned off for the [Fourth of July, 2020] holiday, presumably because fireworks would have set it off constantly."