
Equipped with specially designed radio and aeronautical instrumentation, it represented the cooperative efforts of many organizations, mainly the Guggenheim Fund’s Full Flight Laboratory, U.S. Army Air Corps, U.S. Dept. of Commerce, Sperry Gyroscope Company, and the Kollsman Instrument Company and Radio Frequency Laboratories.
Doolittle considered this flight the most important one he made regarding the development of aviation technology during his flying career. (US Army image)
