Dr Charles Forbin

Dr. Cleo Markham

The President

CIA Director Grauber

Dr. John F. Fisher

Dr. Blake

Dr. Kuprin

Dr. Jefferson J. Johnson

Angela Fields

Missile Commander

Secretary of State

Peterson

Secretary of Defense

Dr. Chin

First Scientist

Thomas L. Harrison

Russian Chairman

Translator

Military officer on phone (uncredited)

Colossus (voice) (uncredited)

Military Computer Entry - Missile Launch (uncredited)

Scientist (uncredited)

Logan US Air Force (uncredited)

Party Guest (uncredited)

Directing

Art

Art

Production

Sound

Sound

Sound

Writing

Writing

Production

Sound

Camera

Editing

Costume & Make-Up

Costume & Make-Up

Costume & Make-Up

Art

Art

Crew