@realhomerhickam In January 1958, my father realized that Soviet spy satellites would be quiet most of the time and a new tracking system was needed. He devised the Naval Space Surveillance System. When the Project Vanguard people transferred to #NASA, he was one of the few people who stayed 1/ 
@realhomerhickam at @USNRL. In 1964, the need to synchronize clocks in different space surveillance stations was an inspiration for him to start his Timation Navsat which led to #GPS. The space race resulted in many things besides Apollo 11. You can see a representation of space surveillance 2/
@realhomerhickam @USNRL above Mattingly in the attached photo. L-R Cernan, Mattingly, dad, Evans, Crippen and Kerwin. 3/
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