Walker, Joseph Albert (1921–1966)
Chief research pilot at the Flight Research Center who set a world altitude
record of 108 km (354,000 ft.) in the X-15
rocket plane on Aug. 22, 1963. He later tested the Lunar
Landing Research Vehicle (LLRV). Walker was killed when his F-104 collided
with an XB-70 bomber, with which he was flying in formation.