Posted By Carl Engelbrecht

"Police departments in several cities nationwide have installed gunfire detection systems in high-crime areas. The devices are usually attached to telephone poles. When they hear the sound of gunfire, they alert police and tell them an exact location. The systems have saved a few lives and helped make some arrests, but some wonder whether the money is better spent on more flesh-and-blood officers."

http://preview.tinyurl.com/crjt5z

 
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