Danny
Bobby Van
Dr. Marion Turner
Ruta Lee
1st Reporter
Mike Farrell
Major / Astronaut
Mark Bailey
Woman Reporter
Mary Meade
John Cestare
Raymond Mayo
Michael Christian
Maj. Georgianna Bronski
Mala Powers
Dr. Haines
James Craig
Maj. Kurt Mason
Grant Williams
Dr. Christopher Perry
Henry Wilcoxon
Girl Spy
Essie Lin Chia
Mission Control Officer
Casey Kasem
Lt. Katie Carlson
Lorri Scott
Col. Don Price
Denny Miller
Director of Photography
Stanley Cortez
Director
Lee Sholem
Harry Hope
Screenplay
Stuart J. Byrne
Producer
Herbert J. Leder
Art Direction
James E. Schwarm
Executive Producer
Oscar Nichols
Original Story