This "launch guest" button from the NASA Kennedy Space Center admitted its wearer to the launch of a specific Space Shuttle mission. Having different colors on the buttons, in this case light blue, allowed NASA officials to know that buttons were not being reused.

A launch guest button served multiple purposes. Wearing it identified the bearer as authorized to be present in certain viewing areas on the premises at NASA, on or near the official viewing stands. After the launch, the button became a souvenir.