See the "Oppenheimer" Cast Next to Their Real-Life Counterparts

In "Oppenheimer," Damon takes on the role of Leslie Groves. According to the Atomic Heritage Foundation, Groves was an officer for the United States Army Corps of Engineers and a director of the Manhattan Project. He was in charge of making pivotal decisions for the project and was responsible for helping bring Oppenheimer to work at the Los Alamos Laboratory.