Cast 31

1. 

   William Shatner

   Narrator

2. 

   Edward Teller

   Self - Nuclear Physicist (as Dr. Edward Teller)

3. 

   W.H.P. Blandy

   Self - Commander Joint Task Force One (archive footage)

4. Frank H. Shelton

   Self - Nuclear Weaponeer (as Dr. Frank H. Shelton)

5. 

   Dwight D. Eisenhower

   Self - U.S. President (archive footage)

6. 

   Adlai Stevenson

   Self - U.S Ambassador (1961-1965) to the UN (archive footage)

7. Randall William Cook

   Newsreel Narrator (archive sound)

8. 

   Nikolai Bulganin

   Self (archive footage)

9. 

   Winston Churchill

   Self (archive footage)

10. Everett Dirksen

    Self (archive footage)

11. 

    Albert Einstein

    Self (archive footage)

12. Enrico Fermi

    Self (archive footage)

13. 

    Reed Hadley

    Self (archive footage)

14. 

    Averell Harriman

    Self (archive footage)

15. 

    Adolf Hitler

    Self (archive footage)

16. 

    Hubert H. Humphrey

    Self (archive footage)

17. 

    John F. Kennedy

    Self (archive footage)

18. 

    Nikita Khrushchev

    Self (archive footage)

19. 

    Anastas Mikoyan

    Self (archive footage)

20. 

    Marilyn Monroe

    Self (archive footage)

21. 

    J. Robert Oppenheimer

    Self (archive footage)

22. 

    Franklin D. Roosevelt

    Self (archive footage)

23. Dean Rusk

    Self (archive footage)

24. Woodrow P. Swancutt

    Self (archive footage)

25. Leó Szilárd

    Self (archive footage) (as Leo Szilard)

26. Mark Tapscott

    Announcer (archive footage)

27. 

    Paul Tibbets

    Self (archive footage)

28. 

    Wernher von Braun

    Self (archive footage)

29. John von Neumann

    Self (archive footage)

30. 

    Mao Zedong

    Self (archive footage)

31. Roy Neal

    Self (uncredited)

Crew 30