Calificación
Reparto

Brian Dennehy
Gen. Leslie Groves

David Strathairn
J. Robert Oppenheimer

Michael Tucker
Leo Szilard

Hume Cronyn
James F. Byrnes

Richard Dysart
President Harry S. Truman

Hal Holbrook
Gen. George Marshall

Barnard Hughes
Henry Stimson

John McMartin
Dr. Arthur Compton

David Ogden Stiers
Franklin D. Roosevelt

Anne Twomey
Kitty Oppenheimer

Ron Frazier
Colonel Pash

Olek Krupa
Edward Teller

John Pielmeier
Seth

Ken Pogue
Dwight D. Eisenhower