Peggy Bowditch was a young girl when she and her family moved to Los Alamos in 1943. Her father, Rear Admiral William Sterling “Deak” Parsons, was chosen by General Groves to become head of ordnance for the Manhattan Project. The Parsons lived on Bathtub Row, next door to the Oppenheimers. Deak Parsons and his wife were close friends of Robert and Kitty Oppenheimer, and Parsons had a fatal heart attack in 1953 after learning that Oppenheimer would be stripped of his security clearance for trumped-up security reasons. Bowditch’s babysitter was the infamous spy Klaus Fuchs, and Bowditch herself babysat Peter Oppenheimer on occasion. Bowditch talks about how her father’s lifelong emphasis on careful planning and preparing for the worst must have helped him with arming the Little Boy bomb in flight.