Kennedy. Strauss laments to his senate aide (Alden Ehrenreich) that Oppenheimer has always hated him. Remember that time he poisoned Einstein against Strauss when he said something to him by the pond?

But Oppenheimer is so prone to bouncing around ... are tremendous as Los Alamos physicist David Hill and an unnamed Senate aide, respectively, and Dane DeHaan is downright chilling as Army officer ...