Other posters have discussed the supposed 'spy' story behind this film: That Errol Flynn attempted to get it made in Pensacola rather than San Diego because the Nazis wanted to see the layout at Pensacola. They've pointed out that in the studio days, an actor, even one with Flynn's stature, could hardly have dictated such a thing. Also the buildings shown appear to be in San Diego. Finally, the airplanes used in the film were already obsolete in 1941. The Pentagon would hardly have allowed anything the Nazis and Japanese didn't already know about to be presented in the film, (and we probably didn't have any such thing at that point anyway).
And that last point intrigues me. This film allegedly presents the cutting edge of aeronautical medicine. Yet, if that's the case, the Pentagon would surely not have allowed Hollywood to present that, either. If the film had been made after the war, it would be more believable that this represented in some way the efforts of the heroic doctors and flyers to conquer black-out and high altitude sickness. But in 1941, the only thing that could have been presented was old science, speculation or Hollywood hokum, which this is surely a mixture of. That makes the film, which is certainly entertaining, rather meaningless as a semi-documentary on the subject.
On the subject of Hollywood's obsession with comic relief, this is something that mars old movies to modern eyes. I'm sure there are things in our films today that will someday be considered an embarrassment but these moronic 'sidekicks' are about as funny these days as a minstral show. In this film, the constant return to Allen Jenkins and his problems with his wife are a maddening intrusion into the drama of the film. Particularly inexcusable is the interruption of the scene where Regis Toomey is about to be told that he can no longer fly and we seque to Jenkins again, then go back and pick up Toomey's story. Did 'Spig' Wead really write Jenkins' part into the script? I doubt it. (See my review of 'Hell Below' for another example of this type of cinematic butchery.)
