10 June 1969: The U.S. Air Force donated the first North American Aviation X-15, serial number 56-6670, to the Smithsonian Institution for display at the National Air and Space Museum. The first of three X-15A hypersonic research rocketplanes built by North American for the Air Force and the National Advisory Committee (NACA, the predecessor of NASA), 56-6670 made the first glide flight and
Robert “Bruce” Brusenhan” grew up in San Antonio graduating from Jefferson High School. He attended The Rice Institute and was accepted in Baylor College of Medicine after three years. He interned in Denver, Colorado at Colorado General Hospital. Next he was assigned as an Air Force Flight Surgeon flying the F-100 in the 53TFS/36TFW from 1958-59 at Bitburg AB, Germany.
He went back to Baylor in Houston for a five year specialty in Urology. He came to San Antonio where he practiced for over 40 years. Dr. Brusenhan was an avid hunter, enjoyed traveling all over the world and gambling in Las Vegas.” (1)
Source: (1) https://www.porterloring.com/obituaries/Robert-L-Dr-Brusenhan-Jr?obId=18142620