The Cold War at home: One man's time working secretly for the CIA

One day in 1975, John Greenagel was contacted by a friend on the San Francisco Police Commission. A simple question was raised: "What do you think of the CIA?" In the years that followed, Greenagel would become what's known as an "access agent" — working secretly on behalf of the agency to bait KGB officers attempting to infiltrate the fledgling Reagan presidential campaign in California. Watch as Greenagel recounts firsthand a previously untold chapter of the Cold War at home.