16. He became a mission specialist astronaut
NASA selected McNair for his scientific prowess. After years of just sending pilots up into space, the organization changed its policy and began seeking scientists as well. Nonetheless, these scientists had to pass the same rigorous physical tests and training as the pilots. Dr. McNair first worked at the Shuttle Avionics Integration Laboratory, where he conducted research and helped develop new technology. In NASA jargon, McNair became a mission specialist astronaut. Mission specialists conducted experiments in space and helped to maintain equipment up there. This potentially involved leaving the shuttle in a space suit to carry out essential repairs.
