Historical <a href="https://en.wikipedia.org/wiki/U.S._Air_Force" class="extiw" title="w:U.S. Air Force">U.S. Air Force</a> film on the creation of the Navstar <a href="https://en.wikipedia.org/wiki/Global_Positioning_System" class="extiw" title="w:Global Positioning System">Global Positioning System</a>
<a href="https://en.wikipedia.org/wiki/United_States_Air_Force" class="extiw" title="w:United States Air Force">United States Air Force</a>
1977
<a href="https://en.wikipedia.org/wiki/Air_Force_Systems_Command" class="extiw" title="w:Air Force Systems Command">Air Force Systems Command</a> (AFSC), Staff Film Report 273 (courtesy of <a rel="nofollow" class="external text" href="https://www.youtube.com/channel/UCM-kjdrQge9AACfB3MSRyrg">Jeff Quitney</a>): <a rel="nofollow" class="external free" href="https://www.youtube.com/watch?v=SFj80G634ww">https://www.youtube.com/watch?v=SFj80G634ww</a>