(foxnews)
Gunshots ring out in the dead of night, and not a single person reports it. Yet police know exactly where the shots came from, even before they arrive on the scene.

It sounds like a scene from The Minority Report, but it's real. A new technology called ShotSpotter enables law enforcement officials to precisely and instantaneously locate shooters, and it has been quietly rolling out across America. From Long Island, N.Y., to San Francisco, Calif., more than 60 cities in the U.S. have been leveraging ShotSpotter to make their streets safer.

Minneapolis has already adopted it. And this past week three more cities from the heartland -- Flint, Mich.; Youngstown, Ohio; and Omaha, Neb. -- have begun testing or furthered plans to roll it out.

The Youngstown Police Department decided to go very public by posting frank warning signs, such as this one at the Youngstown Elementary School:

“If You Fire a Gun, We Will Find You...”
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