Interesting, Project Looking Glass gets mentioned now this:
https://twitter.com/AFSpace/status/1195041618119790593
https://archive.is/AeNLV
AF Space Command
@AFSpace
Are the GPS satellites in Earth's orbit also time machines? Dr. @neiltyson , who recently dropped by HQ AFSPC, has the answer! @usairforce @SchrieverAFB
https://video.twimg.com/ext_tw_video/1195040476795195395/pu/vid/1280x720/cncHrDF53k7C5dxZ.mp4?tag=10