Chaos and the human costs of the Vietnam War's final days

The fall of Saigon is a story we think we know, says filmmaker Rory Kennedy. But in "Last Days in Vietnam," a new documentary airing on PBS' American Experience, the people who were there tell the almost unbelievable stories of what actually happened. Kennedy joins Judy Woodruff to discuss the chaos of those final hours, the human cost of war and lessons for the U.S. today.