Peter Graves
Chris Cronyn
                                    Andrea King
Linda Cronyn
                                    Herbert Berghof
Franz Calder
                                    Marvin Miller
Arjenian
                                    Orley Lindgren
Stewart Cronyn
                                    Walter Sande
Admiral Bill Carey
                                    Willis Bouchey
President
                                    Morris Ankrum
Secretary of Defense Sparks
                                    George Blagoi
Russian Official (uncredited)
Bayard Veiller
Roger Cronyn
                                    Tom Keene
Maj. Gen. George Burdette
                                    Colin Kenny
Mine Owner
                                    House Peters Jr.
Dr. Boulting - Mitchell's Assistant
La Planète rouge
Released