On screen
Cast
19 credited performers
Gerald Mohr
Col. Thomas O`Bannion
Naura Hayden
Dr. Iris Ryan
Les Tremayne
Prof. Theodore Gettell
Jack Kruschen
CWO Sam Jacobs
Artwork unavailable
Paul Hahn
Maj. Gen. George Treeger
J. Edward McKinley
Prof. Paul Weiner
Artwork unavailable
Tom Daly
Dr. Frank Gordon
Artwork unavailable
Don Lamond
TV Newscaster / Narrator / Martian (voice)
Artwork unavailable
Edward Innes
Brig. Gen. Alan Prescott
Artwork unavailable
Gordon Barnes
Maj. Lyman Ross
Artwork unavailable
Jack Haddock
Lt. Col. Davis
Artwork unavailable
Brandy Bryan
Nurse Hayes
Artwork unavailable
Joan Fitzpatrick
Nurse Dixon
Artwork unavailable
Duke Norton
Dr. Muller
Artwork unavailable
William Remick
Dr. Hawley
Artwork unavailable
David De Haven
Air Force News Photographer
Arline Hunter
Joan
Alean 'Bambi' Hamilton
Joan's Friend
Artwork unavailable
Fred Ross
Air Force News Photographer