David Van Dusseldorp, who arrived at Rockwell Collins Inc., Cedar Rapids, Iowa, as a young engineer in 1976, remembers sitting atop the company’s research building in the middle of the night during the summer of 1977. His job was to reposition an antenna every 5 minutes in an effort to capture the first signal from a satellite as part of the company’s Generalized Development Model project, the result of which was a five-channel global positioning system (GPS) receiver.