Before he became the host of Face the Nation or moderated presidential debates, Bob Schieffer was a police reporter for the Fort Worth Star-Telegram. And an unlikely phone call to the newsroom on Nov. 22, 1963, would have a profound impact on his career. The call Schieffer answered was placed by Marguerite Oswald, the mother of Lee Harvey Oswald. Schieffer ended up driving Marguerite Oswald from Fort Worth to Dallas and spent time with her at the Dallas Police Department. He reflects on that fateful day and how it impacted the country.