Trailer
Cast
Mary Pat Gleason
Dora Welsh
Péter Halász
George Kistiakowsky
Ron Frazier
Peter de Silva
Ron Vawter
Jamie Latrobe
James Eckhouse
Robert Harper
Ed Lauter
Whitney Ashbridge
Robert Peter Gale
Dr. Louis Hempelman
Walker Edmiston
(voice)
John Considine
Robert Tuckson
Logan Ramsey
Brehon Somervell
Del Close
Dr. Kenneth Whiteside
Jim True-Frost
Donald Hornig
Paul Newman
Gen. Leslie R. Groves
John Cusack
Michael Merriman
Krzysztof Pieczyński
Otto Frisch
Don Pugsley
Bronston
Ken Strausbaugh
Observation Officer
Bonnie Bedelia
Kitty Oppenheimer
John C. McGinley
Richard Schoenfield
Arthur Holden
Oakridge Doctor
Fred Thompson
Melrose Hayden Barry
Matthew Faison
(voice)
Stan Jones
(voice)
Laura Dern
Kathleen Robinson
Natasha Richardson
Jean Tatlock
Allan Corduner
Franz Goethe
Madison Mason
Boris Pash
Alan Oppenheimer
(voice)
Jon DeVries
Johnny Mount
Clark Gregg
Douglas Panton
Dwight Schultz
J. Robert Oppenheimer
Todd Field
Robert Wilson