Trailer
Cast
Gregory Peck
Charles Keith
Gene Hackman
Buzz Lloyd
Lee Grant
Celia Pruett
George Gaynes
Mission Director
Kenner G. Kemp
Guest in Observation Room (uncredited)
David Janssen
Ted Dougherty
James Franciscus
Clayton Stone
Richard Crenna
Jim Pruett
Nancy Kovack
Teresa Stone
Mariette Hartley
Betty Lloyd
Scott Brady
Public Affairs Officer
Duke Hobbie
Air Force Titan Specialist
Walter Brooke
Network Commentator
John Carter
Flight Surgeon