Lee DuBridge is a prominent American physicist whose work at Caltech, Rochester, and MIT and the Atomic Energy Commission led to interactions with J. Robert Oppenheimer. In this interview, he discusses how the AEC felt about testing the hydrogen bomb in context of the nuclear arms race, explaining why many members of the AEC’s General Advisory Committee were initially against moving ahead with a crash program on the hydrogen bomb. He also explains the confusion over using nuclear weapons tactically versus strategically. DuBridge recalls his efforts to support Oppenheimer during Oppie’s security hearing. Most notably, he remarks that as early as a year before the charges were brought against Oppenheimer, people were aware of trouble brewing for Oppie. DuBridge also remembers a visit he made to NATO headquarters with Oppenheimer, and how warmly Oppie was welcomed.