as Roger Harris

as David Forbes

as The Doctor

as Cabinet Secretary

as Mr. Westphal

as Professor Thompson

as Charlie Goldring

as Harry Bliss

as Secretary of State (uncredited)

as Chief Sullivan

as Bailey

as Judge

as Archibald Cox

as General

as 3rd Senator

as Grantland Rice

as MacAlwee

as Mr. Burrows

as Massey's Attorney (uncredited)

as Studio Executive (uncredited)

as Mental Patient (uncredited)

as Adm. Nimitz

as Adm. Nimitz

as Judge Roger Allman

as Diplomat

as Farrell

as A.C. Thompson

as Dr. Cowan

as Ted Thatcher

as Irving Patrick

as Deputy Police Chief Eugene W. Towne

as George Greenleaf / Ray Fahasateur

as John McLinton

as Station Commander

as Adm. Phillips

as Captain Franklin

as Mr. Jameson from Chicago (uncredited)

as Judge

as Keith Milland

as Judge

as Max Benson

as Commisioner Grant

as Gen. Towns

as Brigadier General

as Amos Lawrence

as Secretary of State

as Defense Secretary

as Leonard - College Regent (uncredited)

as George Packer

as Priest-Secretary

as Wilson Ingersall

as Judge

as Admiral Haines

as Mr. Bowers

as Mr. Finletter

as Colonel Reed

as Miles Gratton (uncredited)

as Mr. Gregory

as Gilbert

as Col. Newcomb

as Father

as Mr. Simmons

as Admiral Westervliet

as Admiral Komack

as Alfred E. Chambers

as Mr. Tate (uncredited)

as Captain

as General Moore

as Majordomo

as Frank Patton

as Franklyn Buckley

as Dr. Gordon Miller

as Sheriff Clark

as General Squires

as General Alton

as Dr. Morton

as John C. Cavanaugh

as Newscaster (uncredited)

as Coroner

as Capt. Pete Ingersoll

as Charles Lee Horne

as Gen. Beauregard

as Leith Houser

as General Fredricks

as Leland Hagerman

as Mayor Hall

as McAdams

as Evacuee from Newhall

as Clinton Saunders

as Judge Cornwall

as Governor of the Mountains (uncredited)

as Meyers

as Capt. Keith Gregory

as Board member (uncredited)

as Maj. Horace Tillman

as The Commissioner

as Executive (uncredited)

as Benny

as Martian

as Sheriff Crowell

as Glen Stillwell

as Speaker

as Henry Hansen

as Amos Judd

as George Ranger

as Judge #2

as Captain Hillman

as Judge Brawley

as Second Judge

as Mr. Baker

as Mr. Howard