Mitch Mitchell

as Ryan Jennings

as Col. Walter C. Phillips (uncredited)

as George Byas (1 episode), as Comdr. Hughes (1 episode), as Howard (1 episode), as Tom Parker (1 episode), as Parker (1 episode), as Wells (1 episode), as Edgar Hackbart (1 episode), as Phelps (1 episode), as Lt. Croft (1 episode), as Travers (1 episode)