ノルデン爆撃照準器
The business skills he developed with Allied brought him an offer to join Sperry Gyroscope Company in September 1938 as an assistant to the company president. Sperry was a military-related industry, and its work in developing both electrically powered gun turrets for bombers and the Norden bombsight brought him to the attention of his godfather, General Arnold, by then the Chief of the United States Army Air Corps.