NASA made Spock an informal mascot. Nimoy was invited to be guest of honor at the March 1967 National Space Club dinner and to take an extensive tour of the Goddard Space Flight Center in Greenbelt, MD. The actor concluded from the warm and intense reception he received that astronauts like John Glenn and aerospace industry engineers, secretaries, and shareholders alike all regarded "Star Trek", and especially the character of Spock, as a "dramatization of the future of their space program".