Calificación
Reparto

Paul Frees
Self - Narrator (voice)

Jon Else
Interviewer

J. Robert Oppenheimer
Self (archive footage)

Hans Bethe
Self

Frank Oppenheimer
Self

Haakon Chevalier
Self

Robert Serber
Self

Holm Bursom
Self

Stirling Colgate
Self

Freeman Dyson
Self

Susan Evans
Self

Francis Fergusson
Self

Leslie Groves
Self (archive footage)

Elizabeth Ingram
Self

Robert Krohn
Self

Dave MacDonald
Self