Nancy Guthrie Kidnapping: Sheriff Remains 'Positive' They'll Solve the Case

The Arizona sheriff in charge of Nancy Guthrie's kidnapping investigation is still optimistic they'll solve the case, nearly six months after Savannah Guthrie's mother first went missing. "We have so much DNA to sort through. We have so much, in terms of video evidence, to look at," Pima County Sheriff Chris Nanos shared in a "Today" news package on Tuesday. "So I'm still positive that we're going to resolve this case." The update came a day after the NBC anchor appeared to address her mother's suspected captors in another Instagram video. "I come today with a very . . .