Russ Conway

as Ship's Captain (1 episode)

as Fraser

as Judge with Stopwatch

as Chief Controller (6 episodes)

as Chief Mechanic

as First Sheriff

as Dr. Jay Milton (1 episode)

as Rancher

as Curtis Atherton (1 episode), as Edwards (1 episode)

as Police Capt. Jacoby (uncredited)

as Self (1 episode)

as H. T. Stewart (1 episode), as Captain Briskin (1 episode)

as Interrogator (uncredited)

as Howard Wycoff (1 episode)

as John W. Grant

as Detective Harding (1 episode)

as Dr. David Walters (1 episode), as Harry Kellem (1 episode), as Dr. Walter Manning (1 episode)

as Emmet Dolan (1 episode)

as Gen. Parker (1 episode)

as Colonel Henroy

as American General