Narrator (Levon Helm) [opening narration]
There was a demon that lived in the air. They said whoever challenged him would die. Their controls would freeze up, their planes would buffet wildly, and they would disintegrate. The demon lived at Mach 1 on the meter, 750 miles an hour, where the air could no longer move out of the way. He lived behind a barrier through which they said no man could ever pass. They called it: The sound barrier. Then, they built a small plane, the X-1, to try and break the sound barrier. And men came to the High Desert in California to ride it. They were called test pilots. And no one knew their names.
