Savannah Guthrie and her family are renewing their plea for answers in the disappearance of their mother, Nancy Guthrie. This comes as the Pima County Sheriff's Department released the two ransom notes, believed to potentially be credible, that were sent to local media outlets in the days after Nancy's abduction on Feb. 1. NBC's Liz Kreutz reports and NBC's national law and intelligence correspondent Tom Winter joins TODAY with analysis.