as Secretary of State (uncredited)
as Leonard - College Regent (uncredited)
as Maj. Horace Tillman
as Mental Patient (uncredited)
as Colonel Reed
as Charlie Goldring
as Executive (uncredited)
as Mr. Simmons
as Evacuee from Newhall
as Station Commander
as Brigadier General
as Mr. Tate (uncredited)
as Miles Gratton (uncredited)
as Benny
as Mr. Jameson from Chicago (uncredited)
as Secretary of State
as Defense Secretary
as Newscaster (uncredited)
as MacAlwee
as Board member (uncredited)
as Judge
as Governor of the Mountains (uncredited)
as Studio Executive (uncredited)
as David Forbes
as Archibald Cox
as Dr. Morton
as Coroner
as Adm. Nimitz
as General
as Harry Bliss
as Capt. Pete Ingersoll
as A.C. Thompson
as 3rd Senator
as Diplomat
as Gen. Towns
as Chief Sullivan
as Grantland Rice
as Bailey
as George Packer
as Captain Franklin
as Adm. Phillips
as Amos Lawrence
as George Ranger
as Judge #2
as Captain Hillman
as Judge Brawley
as Second Judge
as Admiral Westervliet
as Admiral Komack
as John C. Cavanaugh
as The Commissioner
as Mr. Burrows
as Massey's Attorney (uncredited)
as General Fredricks
as Leland Hagerman
as Martian
as Judge Cornwall
as Mr. Gregory
as Ted Thatcher
as Irving Patrick
as Deputy Police Chief Eugene W. Towne
as George Greenleaf / Ray Fahasateur
as John McLinton
as Alfred E. Chambers
as General Moore
as General Alton
as Majordomo
as Frank Patton
as Sheriff Clark
as Sheriff Crowell
as Speaker
as General Squires
as Captain
as Dr. Gordon Miller
as Priest-Secretary
as Charles Lee Horne
as Keith Milland
as Gilbert
as Col. Newcomb
as Henry Hansen
as Amos Judd
as Farrell
as Admiral Haines
as Leith Houser
as Mr. Baker
as Mr. Bowers
as Mr. Finletter
as Mr. Westphal
as Dr. Cowan
as Franklyn Buckley
as Gen. Beauregard
as Mayor Hall
as Roger Harris
as Max Benson
as Commisioner Grant
as The Doctor
as Meyers
as Capt. Keith Gregory
as Wilson Ingersall
as Glen Stillwell
as Mr. Howard
as Father
as McAdams
as Cabinet Secretary
as Clinton Saunders
as Professor Thompson
as Judge Roger Allman