Calif. cops become first with sonar device
By Jonathan Lockett
The Contra Costa Times
CONTRA COSTA, Calif. — The Contra Costa County Sheriff's Office has acquired a new type of sonar equipment to help protect local waterways against terrorism.
The Echoscope is a real-time, three-dimensional device the marine patrol will use to scan harbors, piers and the bottom of ships for security threats.
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Full story: Calif. cops become first with sonar device