In 1962, NASA (formerly NACA) began preparations of an orbital mission that would send astronaut John Glenn into space. This project would soon become the most important work Katherine Johnson has ever done. The orbital mission would require a network of computers and fully designed system software that could link tracking stations around the world to the IBM computers based in Washington D.C., Bermuda and Cape Canaveral. While forming the preflight checklist, Glenn asked engineer to, “Get the girl.”, referring to Katherine. The technology being utilized in the new programs had engineers, as well as Glenn, nervous. This type of thing had never been done before. Glenn had Katherine assigned to manually run (by hand) all of the numbers that the computer programs were running to ensure their accuracy. John Glenn’s flight was a success and marked a milestone for the United Stated of America.