 | William Shatner als Narrator |
 | Edward Teller als Self - Nuclear Physicist (as Dr. Edward Teller) |
 | W.H.P. Blandy als Self - Commander Joint Task Force One (archive footage) |
 | Frank H. Shelton als Self - Nuclear Weaponeer (as Dr. Frank H. Shelton) |
 | Dwight D. Eisenhower als Self - U.S. President (archive footage) |
 | Adlai Stevenson als Self - U.S Ambassador (1961-1965) to the UN (archive footage) |
| Randall William Cook als Newsreel Narrator (archive sound) |
 | Nikolai Bulganin als Self (archive footage) |
 | Winston Churchill als Self (archive footage) |
| Everett Dirksen als Self (archive footage) |
 | Albert Einstein als Self (archive footage) |
| Enrico Fermi als Self (archive footage) |
 | Reed Hadley als Self (archive footage) |
 | Averell Harriman als Self (archive footage) |
 | Adolf Hitler als Self (archive footage) |
 | Hubert H. Humphrey als Self (archive footage) |
 | John F. Kennedy als Self (archive footage) |
 | Nikita Khrushchev als Self (archive footage) |
 | Anastas Mikoyan als Self (archive footage) |
 | Marilyn Monroe als Self (archive footage) |
 | J. Robert Oppenheimer als Self (archive footage) |
 | Franklin D. Roosevelt als Self (archive footage) |
| Dean Rusk als Self (archive footage) |
| Woodrow P. Swancutt als Self (archive footage) |
| Leó Szilárd als Self (archive footage) (as Leo Szilard) |
| Mark Tapscott als Announcer (archive footage) |
 | Paul Tibbets als Self (archive footage) |
 | Wernher von Braun als Self (archive footage) |
| John von Neumann als Self (archive footage) |
 | Mao Zedong als Self (archive footage) |
| Roy Neal als Self (uncredited) |
| Peter Kuran | Director |
| Scott Narrie | Writer |
| Don Pugsley | Writer |
| Lyle Conway | Associate Producer |
| Peter Kuran | Producer |
| Alan Munro | Producer |
| Marilyn Nave | Associate Producer |
| Jacqueline Zietlow | Co-Producer |
| William T. Stromberg | Original Music Composer |
| Barbu Marian | Director of Photography |
| Peter Kuran | Editor |
| Wendy Jill York | Hairstylist |
| Wendy Jill York | Makeup Artist |
| Clay Woods | Production Manager |
| Michael Miller | Sound Recordist |
| Mark A. Rozett | Sound Re-Recording Mixer |
| Dave Yamamoto | Sound Re-Recording Mixer |
| Cynthia Pusheck | First Assistant Camera |
| Amanda Thompson | First Assistant Camera |
| Lennie Moore | Additional Music |
| Lennie Moore | Orchestrator |
| John W. Morgan | Additional Music |
| John W. Morgan | Orchestrator |
| Edgardo Simone | Orchestrator |
| William T. Stromberg | Conductor |
| William T. Stromberg | Orchestrator |
| Christine H. Luethje | Music Editor |
| Avelino Deleon | Production Assistant |
| Dan Harary | Publicist |
| Kimberly Terhorst | Production Assistant |
| Gary Barron | Colorist |
| Brian Griffin | Digital Supervisor |
| Gary Zietlow | Additional Photography |
