Episode 5: "The Final Frontier" (original air date: 10/14/2009) profiles the league's final year, 1969, including the contentious debate on post-merger league realignment, Joe Namath's near-retirement, and innovations like the West Coast Offense and stack defense that found their origins in the AFL. With the respectability it long sought now secure, the league ends on a high note with Hank Stram's Kansas City Chiefs soundly defeating Minnesota in Super Bowl IV.