Tolong jelaskan mengenai 20,000 Men a Year

20,000 Men a Year (alias Air Story dan Aviation Story) adalah sebuah film laga Amerika Serikat tahun 1939 garapan Alfred E. Green dan ditulis oleh Lou Breslow dan Owen Francis. Film tersebut menampilkan Randolph Scott, Preston Foster, Margaret Lindsay, Mary Healy, Robert Shaw dan George Ernest.

D'Arc, James V. When Hollywood Came to Town: A History of Moviemaking in Utah. Layton, Utah: Gibbs Smith, 2010. .

Farmer, James H. Celluloid Wings: The Impact of Movies on Aviation. Blue Ridge Summit, Pennsylvania: Tab Books Inc., 1984. .

Paris, Michael. From the Wright Brothers to Top Gun: Aviation, Nationalism, and Popular Cinema. Manchester, UK: Manchester University Press, 1995. .

Pendo, Stephen. Aviation in the Cinema. Lanham, Maryland: Scarecrow Press, 1985. .

Wynne, H. Hugh. The Motion Picture Stunt Pilots and Hollywood's Classic Aviation Movies. Missoula, Montana: Pictorial Histories Publishing Co., 1987. .