This image or file is a work of a U.S. Air Force Airman or employee, taken or made as part of that person's official duties. As a work of the U.S. federal government, the image or file is in the public domain in the United States.
== Summary == {{Information |Description= Historical [[U.S. Air Force]] film on the creation of the Navstar [[Global Positioning System]] |Source= [[Air Force Systems Command]] (AFSC), Staff Film Report 273 (courtesy of [https://www.youtube.com/channel/UCM-kjdrQge9AACfB3MSRyrg Jeff Quitney]): https://www.youtube.com/watch?v=SFj80G634ww |Date= 1977 |Author= [[United States Air Force]] |Permission= {{PD-USGov-Military-Air Force}} |other versions= }}
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