Vint Cerf may be best known for his role in the creation of the Internet, but his earliest professional years were spent in the space industry, during the heady years of the Apollo missions. While Cerf was in high school, his father worked at North American Aviation, a company that over the years created the X-15 rocket plane, the Saturn V rocket, and the Space Shuttle orbiter. During some summers in high school and college in the early 1960s, Cerf worked for two North American Aviation subsidiaries, including Rocketdyne, which created rocket engines. “I have a T-shirt that says, ‘I am a rocket scientist,'” says Cerf, now chief Internet evangelist at Google.