Calificación
Reparto

Sean Connery
Paul Bradley

Natalie Wood
Tatiana Donskaya

Karl Malden
Harry Sherwood

Brian Keith
Dr. Dubov

Martin Landau
General Adlon

Trevor Howard
Sir Michael Hughes

Richard Dysart
Secretary of Defense

Henry Fonda
The President

Joseph Campanella
General Easton

Bo Brundin
Rolf Manheim

Katherine De Hetre
Jan Watkins

James G. Richardson
Alan Marshall

Roger Robinson
Bill Hunter

Michael Zaslow
Sam Mason

John Findlater
Astronaut Tom Easton

Paul Tulley
Astronaut Bill Frager