Astronaut Guion S. Bluford, STS-8 mission specialist, assists Dr. William E. Thornton (out of frame) with a medical test that requires use of the treadmill exercising device designed for spaceflight by the STS-8 medical doctor. Retired Col. Guion “Guy” Bluford Jr. received the 2021 Air Force Reserve Officer Training Corps Distinguished Alumnus Award during a ceremony at Penn State on Oct. 6, 2021. (U.S Air Force Courtesy photo)