Douglas Brinkley's best-selling novel Tour of Duty follows 2004 presidential hopeful John Kerry's years in Vietnam and goes on to illustrate his contribution to peace advocacy groups after being honorably discharged from the Navy. Both of these events, according to George Butler, Tour of Duty director and long-time friend of Senator Kerry, had a profound impact on the politician's personal ideologies, and provided the foundation for Kerry's career. Kerry, who hired Butler as his press secretary during his 1969 congressional campaign, agreed to be interviewed for the film. Tour of Duty, in addition to a series of interviews, features an array of archival footage of Kerry dating from the 1960s to his presidential run.