Thomas-Morse MB-3 Prototype AS.40093 United States Army Air ServiceThese are 1 72 scale decals for the Thomas Morse MB 3 Prototype, serial AS. 40093, United States Army Air Service evaluated at McCook Field as Project P 66, the original prototype of America's first domestically designed and produced pursuit fighter, first flown in 1919. McCook Field, located near Dayton, Ohio, was the U. S. Army Air Service's primary aeronautical engineering and flight test facility in the years immediately following World War I the