What to make of last night’s massive police operation in Tucson, Arizona? SWAT and the FBI rolled out in full force as the search for missing grandmother Nancy Guthrie intensified. But was that response warranted — or was it overkill given the lead they were chasing? And law enforcement locates mystery DNA in Nancy's home, sparking hopes of a major breakthrough. We speak with retired FBI Special Agent Jennifer Coffindaffer. Ep. 10 Learn more about your ad choices. Visit podcastchoices.com/adchoices