Former NACA test pilot Scott Crossfield at the 1998 "Men of Mach 2" symposium, an event celebrating his work in the 1950's on the D-558-II Skyrocket aircraft.

Former NACA test pilots Scott Crossfield, Stan Butchart, Robert Champine, and John Griffith gathered at the NASA Dryden Flight Research Center for the "Men of Mach 2" symposium, an event celebrating their work in the 1950's on the D-558-II Skyrocket aircraft.