Forrest Compton

as Mr. Emerson (2 episodes), as Mr. Stackhouse (1 episode)

as President Flynn

as Mr. Colter (1 episode)

as Biddleton (1 episode)

as Elgin Bonning (1 episode)

as Capt. Chester Albertson (1 episode)

as Dale Newton (1 episode), as Glenn Orland (2 episodes), as George Lith (1 episode), as Special Agent Henry Andover (1 episode), as Bernard Stoddard (1 episode), as Agent Roy McAdams (1 episode), as SAC Edgar Brocton (1 episode), as SAC Anthony Harper (1 episode), as RA Martin Boles (1 episode)

as Major Zimmer (4 episodes), as Major Krantz (1 episode), as Captain Geissler (1 episode)

as Colonel Gray (36 episodes), as Captain Brinson (2 episodes), as Lieutenant Colonel (1 episode), as Colonel (2 episodes)

as Captain Dirksen (1 episode)

as Dr. Harmon (1 episode)

as John Bradley

as Jeff Stevens (uncredited) (1 episode)

as Major Lodge (1 episode)

as Robin Flynn (1 episode)

as ASW Officer (1 episode)

as Silas (1 episode)

as Davis (1 episode)

as Charles Beacroft (1 episode)

as Harry Tiburon (1 episode), as Owen Frazer (uncredited) (1 episode), as Steve Culver (1 episode)

as Charles Peake (1 episode)