← Cast of Countdown
Secondary Cast of Countdown
Stephen Coit
Ehrman
John Rayner
Dunc
Charles Irving
Seidel
Benjie Bancroft
Technician (uncredited)
Arthur Bernard
Coopersmith (uncredited)
Betty Bresler
Ross's Secretary (uncredited)
Robert Buckingham
Party Guest (uncredited)
Robert Cunningham
Technician (uncredited)
Ron Doyle
Reporter (uncredited)
Sharron Frye
Marion (uncredited)
David Greene
Technician (uncredited)
Vincent Howard
Facility Director (uncredited)
James Johnson
Technician (uncredited)
Frank Mathias
Technician (uncredited)
Jana Pearce
Girl (uncredited)
Bob Peoples
Reporter (uncredited)
Ray Pourchot
Reporter (uncredited)
Don Rizzan
Technician (uncredited)
Clete Roberts
Announcer (uncredited)
Stewart Rose
Reporter (uncredited)
Jerry Rush
Cameraman (uncredited)
Ron Stokes
Technician (uncredited)