That's a piece of history many know nothing about, and another is that with that mass of flying machines being produced, needing to be moved from factory to front lines, ferrying services later to become the WASP's (Women Airforce Service Pilots) were approved, and women flight crews took over the testing and delivery duties, along with towing target drones for training anti-aircraft gunners - talk about a high stress flying job! Each woman pilot & crew member freed up a man for active duty service, and started the tradition of female service members.