Gregory Peck character Charles Keith
Richard Crenna character Jim Pruett
David Janssen character Ted Dougherty
James Franciscus character Clayton Stone
Gene Hackman character Buzz Lloyd
Lee Grant character Celia Pruett
Nancy Kovack character Teresa Stone
Mariette Hartley character Betty Lloyd
Scott Brady character Public Affairs Officer
Craig Huebing character Flight Director
Frank Marth character Air Force Systems Director
John Carter character Flight Surgeon
Vincent Van Lynn character Aerospace Journalist
George Gaynes character Mission Director
Tom Stewart character Houston Cap Com
Duke Hobbie character Air Force Titan Specialist
Walter Brooke character Network Commentator
Dennis Robertson character Launch Director
Kenner G. Kemp character Guest in Observation Room
