Urban shooters have a new enemy:  Shot Spotter.  It’s being used in over 60 cities, including Flint, and pinpoints gun activity with wide-area acoustic surveillance and GPS technology to triangulate the source of  gunshots

Read more: http://www.foxnews.com/scitech/2011/12/22/sniper-detectors-coming-to-americas-heartland/#ixzz1hMM5QNa6