Homicide Units Join Search After Nancy Guthrie Disappears in Arizona

Homicide detectives joined a search for Nancy Guthrie after the mother of Savannah Guthrie disappeared from her home in Arizona.Chris Nanos deployed drones and aircraft to scour the Tucson area following the discovery of concerning evidence at the residence.Savannah Guthrie was absent from her broadcast on the "Today" show while authorities expanded their search for the vulnerable woman in USA.