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The film begins with the following written dedication: "To our airplane factory workers, whose magnificent efforts will enable the United Nations to preserve a free way of life, this motion picture is respectfully dedicated." The film's working title was The Shadow of Their Wings. News items in Hollywood Reporter add the following information about the production: For the first time since the beginning of the war, the studio received permission to shoot some scenes at Lockheed Aircraft plant in Los Angeles, where the crew filmed bombers waiting to be sent to England by way of Canada. Each member of the film crew was required to carry a birth certificate in order to gain entrance to the plant. Jack Carson replaced Ronald Reagan in the role of "Brad" when the latter was assigned to Desperate Journey. At the time of the film's release, Russell Arms was serving in the United States Army. Although there is a 1942 copyright statement on the film, no record of the picture appears in the Copyright Catalog.