Peter Graves
Doug Martin
James Seay
Colonel Banks
Steve Pendleton
Briggs
Frank Gerstel
Dr. Kruger
John Merrick
Deneb•Tala
Barbara Bestar
Ellen Martin
Shepard Menken
Major Clift
Jack Daly
Power House Guard
Ron Kennedy
Sentry
Ben Welden
Pilot
Burt Welden
Sergeant
Lester Dorr
Station Attendant
Ruth Bennett
Secretary
Mark Scott
Narrator
