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Concentrates on Bergstrahl's work at NRL (1946-56), principally as an experiment integrator for rocket flights, with additional coverage of his later work at Ford Aeroneutronics and Aerospace Corporation. Besides discussing the procedures and problems of integrating experiments, Bergstrahl relates his work at NRL on early attempts at high altitude photography, on rocket impact point prediction systems, and on cosmic ray balloon research.
After discussing his upbringing, undergraduate education in physics at the University of Minnesota, and postgraduate education and work at the University of Virginia during World War II, Ney describes returning to Minnesota in 1946 and his contributions in the cloud chambers field for the balloon research then being conducted with Jean Piccard and others. He then reviews relations with the Rochester group conducting similar experiments, reasons for using balloons instead of rockets, involvement in the Orbiting Satellite observatory program, and training the Mercury and Gemini astronauts.