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Linda S. recommends a web site where you can listen to the radio frequencies for many (county) emergency services. The link is http://www.radioreference.com/apps/audio/?stid=6
Click on the county you wish. You can listen to live audio feeds and often the emergency information scanners.
Here for example is Contra Costa County: http://www.radioreference.com/apps/audio/?ctid=189
Another tool to help DART members stay informed of what's happening.
