Ben Hecht, Howard Hughes and Nazi Flying Discs in Antarctica

"It is believed that Ben Hecht and William Faulkner, both good friends of producer Howard Hawks, contributed to the script. However, long-standing rumors that Orson Welles contributed to the dialog are believed to be untrue."

"Howard Hawks asked the US Air Force for assistance in making the film. He was refused because the top brass felt that such cooperation would compromise the U.S. government's official stance that UFOs didn't exist."