The competition for the air corps contract was to be decided by a "fly-off" between Boeing's design, the Douglas DB-1, and the Martin Model 146 at Wilbur Wright Field in Dayton, Ohio.
Det ville blive bestemt hvem der vandt kontrakten ved sammenlignende flyvninger (et "fly-off") mellem Boeings design, Douglas DB-1 og Martin Model 146 på Wright Field i Dayton, Ohio.