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