The NF-104A was a hybrid rocket (fired 3:15 in above youtube) and jet powered craft. Note (1:40 into the youtube) the Roar of Acceleration as the rocket-jet plane shifts to Afterburner. Turn up loud!
The firing of the ejector seat ignited the pure oxygen in Yeager's face mask. Being a a test pilot in a rocket plane is a risky business.
Please connect with Submarine Matters Mother Ships and Rocket Planes - Part One, December 8, 2015.