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Gerald Mohr
Col. Thomas O`Bannion
Naura Hayden
Dr. Iris Ryan
Les Tremayne
Prof. Theodore Gettell
Jack Kruschen
CWO Sam Jacobs
Paul Hahn
Maj. Gen. George Treeger
J. Edward McKinley
Prof. Paul Weiner
Tom Daly
Dr. Frank Gordon
Don Lamond
TV Newscaster / Narrator / Martian (voice)
Edward Innes
Brig. Gen. Alan Prescott
Gordon Barnes
Maj. Lyman Ross
Jack Haddock
Lt. Col. Davis
Brandy Bryan
Nurse Hayes