Sam Hurley
Kay Garven
Dorothy 'Dottie' Vail
Larry Fleming
Asa Tremaine
Bart Moore
Arthur Ashton
Dr. Neal Garven
Dummy (as Frank de Kova)
Hunter - Driver of Car (uncredited)
Hunter (uncredited)
Gas Station Attendant (uncredited)
Air Force Helicopter Pilot (uncredited)
Colonel at Control Station (uncredited)
Colonel Wright (uncredited)
A.F. Captain in Helicopter (uncredited)
Nurse (uncredited)
Lieutenant at Control Station (uncredited)
Scientist at Control Station (uncredited)
Reporter Charlie (uncredited)
Pete (uncredited)
Sgt. Trooper (uncredited)
Driver (uncredited)