Overview
Assigned to oversee the development of the atomic bomb, Gen. Leslie Groves is a stern military man determined to have the project go according to plan. He selects J. Robert Oppenheimer as the key scientist on the top-secret operation, but the two men clash fiercely on a number of issues. Despite their frequent conflicts, Groves and Oppenheimer ultimately push ahead with two bomb designs — the bigger "Fat Man" and the more streamlined "Little Boy."
| Actor | Age then | Age now | |
|---|---|---|---|
 | 64 | September 26, 2008 (83) | |
 | 41 | 77 | |
 | 41 | 77 | |
 | 23 | 59 | |
 | 22 | 58 | |
 | 49 | December 21, 2003 (64) | |
 | 30 | 66 | |
 | 26 | March 18, 2009 (45) | |
 | 40 | April 16, 1994 (45) | |
 | - | - |