Byron Morrow

as William Leahy

as Roger Harris

as Judge Swenson

as The Doctor

as David Forbes

as Commissioner #2

as Cabinet Secretary

as Mr. Westphal

as Marshall Dunn

as Professor Thompson

as Charlie Goldring

as Chief Sullivan

as Secretary of State (uncredited)

as Farrell

as Archibald Cox

as Judge Hunt

as Judge

as Judge

as Bailey

as General

as Mr. Burrows

as Massey's Attorney (uncredited)

as MacAlwee

as Grantland Rice

as 3rd Senator

as Studio Executive (uncredited)

as Adm. Nimitz

as Adm. Nimitz

as Mental Patient (uncredited)

as Judge Roger Allman

as Diplomat

as Farrell

as A.C. Thompson

as Dr. Cowan

as Ted Thatcher

as Irving Patrick

as Eugene W. Towne

as George Greenleaf / Ray Fahasateur

as John McLinton

as Mr. Jameson from Chicago (uncredited)

as Adm. Phillips

as Station Commander

as Captain Franklin

as Judge

as Keith Milland

as Devereaux

as Max Benson

as Commisioner Grant

as Judge

as Gen. Towns

as Amos Lawrence

as Brigadier General

as Secretary of State

as Defense Secretary

as Leonard - College Regent (uncredited)

as George Packer

as Priest-Secretary

as Wilson Ingersall

as Admiral Haines

as Mr. Bowers

as Mr. Finletter

as Judge

as Miles Gratton (uncredited)

as Father

as Colonel Reed

as Mr. Gregory

as Gilbert

as Col. Newcomb

as Mr. Simmons

as Alfred E. Chambers

as Admiral Westervliet

as Admiral Komack

as Mr. Tate (uncredited)

as Captain

as Dr. Gordon Miller

as General Moore

as General Alton

as Dean Watson

as Dr. Harris

as Agent 37

as Majordomo

as Franklyn Buckley

as Frank Patton

as Sheriff Clark

as General Squires

as Air Force Major

as John C. Cavanaugh

as Dr. Morton

as Leith Houser

as Gen. Beauregard

as Mayor Hall

as McAdams

as Charles Lee Horne

as General Fredricks

as Leland Hagerman

as Newscaster (uncredited)

as Capt. Pete Ingersoll

as Coroner

as Judge Cornwall

as Clinton Saunders

as Evacuee from Newhall

as Capt. Keith Gregory

as Meyers

as Governor of the Mountains (uncredited)

as Sheriff

as The Commissioner

as Board member (uncredited)

as Horace Tillman (uncredited)

as Speaker

as Executive (uncredited)

as Martian

as Glen Stillwell

as Benny

as Sheriff Crowell

as Henry Hansen

as Amos Judd

as George Ranger

as Judge #2

as Captain Hillman

as Second Judge

as Judge Brawley

as Mr. Baker

as Mr. Howard