Airforce supersonic research moves to the top of Hurricane Mesa, where a dummy-carrying rocket sled is boosted to supersonic speed, to hurtle a dummy over the precipice, in the most drastic trial of pilot safety gear. Establisshing shot - Airrial shot of Hurricane Mesa. MCUS - Military giving an all clear signal. MCUS - Military men putting the rockets into place. CUS - A couple of dials. MCUS - The switch is hit and the rocket takes off. MS - The dummy is exxxpelled from the sled and hurdled over a thousand clif. The most drastic trial of the safty gear that spells life or death for American air men.