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.
On Challenger’s middeck, Mission Specialist Guion “Guy” Bluford, 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 on Sept. 5, 1983. Forward lockers with data recording units and checklist notebooks are to the left of Bluford. Guy Bluford was the first African-American astronaut to fly into space.
Image Credit: NASA