DNA technology is enabling cases to be solved previously thought unsolvable. Investigators with a fundamental knowledge of how to identify, preserve, and collect DNA evidence properly can solve cases in ways previously seen only on television. Evidence invisible to the naked eye can be the key to solving a residential burglary or child's murder. It also can link different crime scenes to each other in a small town, within a single State, or across the Nation.
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See also training from the Office of Community Oriented Policing Services (COPS).