MS of John Staff getting helmeted and strapped in to prove his theory that man can stand a stronger pull of gravity than previously believed. Strapped into a steel sled he performs a stunt paving the way for future astronauts. Shots of men preparing the sled with nine rockets to propel it forward. ELS of the sled racing in the desert for the test with smoke billowing at the end of the run. Classic image/footage of his face being contorted by the acceleration and deceleration of the vehicle. Footage of sled stopping with dust and smoke everywhere.