Astronaut Mark Lee talks to ground controllers about SPIFEX

STS064-311-031 (10 Sept. 1994) --- Astronaut Mark C. Lee, STS-64 mission specialist, at a Payload General Support Computer (PGSC) on the space shuttle Discovery's flight deck, talks to ground controllers about the Shuttle Plume Impingement Flight Experiment (SPIFEX). Astronaut L. Blaine Hammond, pilot, is partially visible in the background. Photo credit: NASA or National Aeronautics and Space Administration