Roy Gordon

as Minister (uncredited)

as Dr. Frederick Ramsey

as Albright

as Paul Thompson

as Emmett Reese (uncredited)

as Sen. Walder

as Mayor of Los Angeles

as The President

as Dr. Raymond Cushing

as H.B. McClay

as Frank Graham

as Dr. Loren Wright

as Sorenson

as Associate Producer (uncredited)

as Hoppy

as Richard V. Atherton (uncredited)

as Colonel Carrington

as Abbott

as Audubon

as Andrew V. McMahon (8 episodes)

as Dr. Elmwood

as Senior UN Official