 He would remain with the company until his retirement in 1990, serving as Senior Vice President for Engineering from 1981 through 1990.After leaving Raytheon, Shea became an adjunct professor of aeronautics and astronautics at MIT.In February 1993, NASA administrator Daniel Goldin appointed Shea to the chairmanship of a technical review board convened to oversee the redesign of the troubled International Space Station project.