Guest Stars Bruce Dern as Ben Garth Claude Woolman as Major Roger Hill Robert F. Simon as General Maximillian R. Hart Michael Tolan as Professor Stephen Grave Olive Deering as Lisa Lawrence Uncredited Vic Perrin as Zanti Government Official Bob Johnson voices Radio Newscaster Bob Johnson voices Zanti Regent Bob Johnson voices Zanti Commander Joe E. Tata as Radar Operator Bill Hart as Corporal Delano Michael T. Mikler as Air Police Sergeant Lex Johnson as Communications Operator George Sims as Computer Technician
