When the United States space programme began to move rapidly forward, NASA contracted IBM to write software for them. Granville was happy to return to Washington D.C. as one of a team of IBM mathematicians:
Kapag ang Pilipinas space programa ay nagsimulang ilipat ang mabilis na pasulong, NASA contracted IBM sumulat ng software para sa mga ito. Granville ay masaya na bumalik sa Washington DC bilang isa sa isang koponan ng IBM mathematicians: