NBC Nightly News Full Episode - Feb. 10

Tonight, we're live from Milan as some of Team USA's biggest stars compete. But first, that breaking news back at home. The major break in the disappearance of Nancy Guthrie.Chilling new video showing a masked person with a gun approaching the 84year-old's home and tampering with a doorbell camera. We will take you moment by moment through all the new evidence. Our experts standing by to break down everything from the gloves to the backpack to the type of gun and holster.And Savannah's new plea to anyone wh ...