[ABC7 ](http://abclocal.go.com/wls/story?section=news%2Flocal&id=8661428)reports that Chicago Police have two new $20,000 LRADs-Long Range Acoustic Devices-ready for the Chicago NATO Summit. The devices can be used to broadcast messages to crowds up to a kilometer away. Although the devices are also capable of emitting a high-decibel screech to disperse crowds, Chicago Police say they don’t intend to use the devices that way.
Chicago Police demonstrate two LRAD communication devices
TrackBack URL: http://blogs.suntimes.com/cgi-bin/mt-tb.cgi/47223