Screen Shot 2017-04-18 at 17.35.09 Published on April 18, 2017 in 19 April 2006Full resolution (856 × 1068) ← Previous Next → NACA Research Test Pilot Albert Scott Crossfield in teh cockpit of the Douglas D-558-II Skyrocket after exceeding Mach 2, 20 November 1953. (NASA)