Howard Stringer; Robert Downey, Jr.; 'Once Upon a Distant War'

Howard Stringer, former President of CBS Broadcast Group, talks about the future of television and home entertainment. Actor Robert Downey, Jr. on directing, working with Oliver Stone, and his role in the film "Restoration." William Prochnau and David Halberstam talk about journalism during the Vietnam War and their book, "Once Upon a Distant War."