“The NF-104A, a modification of the basic Lockheed F-104A Starfighter with rocket engine and reaction controls(1), was picked as the aircraft to train pilots on realistic spaceflight training experiences.
Three F-104A aircraft chosen for the program, USAF serial numbers 56-0756, 56-0760 & 56-0762 which were all former test aircraft at Edwards AFB. They were delivered to Lockheed in August & September 1962 for modification work…
NF-104A #56-0756 became permanently grounded after a flight on June 15, 1971. Captain Howard ‘Whitey’ Thompson, beginning his rocket-assisted transonic run when he heard a loud explosion and immediately shut the engine down. He felt a second explosion and his chase pilot reported that the rocket and part of the rudder had disappeared. Captain Thompson made an emergency landing at Edwards AFB but the aircraft never flew again.”(1)
From the Misty FACs website: “Whitey Thompson was a test pilot, retired and teaches in an urban high school.”
Source: (1) https://www.afmc.af.mil/News/Article-Display/Article/2854337/flashback-lockheed-nf-104a-aerospace-trainer/