On Page 438 of American Prometheus - such a good book with so many possibilities for Nolan... Regarding some comments on this Oppenheimer forum where it was discussed how General Groves will be portrayed by Damon, I think Downey Jr's role will be the more dynamically antagonistic one in how Strauss is portrayed. Despite Oppenheimer and Groves having distinct differences in style - they were an effective pair. I'm at the stage in the book where Strauss is really going to start going after Oppenheimer. Regardless, it will be fascinating to see what level of nuance Nolan goes for with this source material.