Fastwalkers is a North American Aerospace Defense Command classification for Unidentified Flying Objects which enter or leave the atmosphere at a great velocity and which are sometimes captured on the Defense Support Program satellite system. Slower anomalous objects are referred to as "Slowwalkers".
It is also the title of a 2007 movie claiming a US government cover-up on the subject.
- Townsend, Bradley R. Space Based Satellite Tracking and Characterization Utilizing Non-Imaging Passive Sensors, Masters Thesis, Air Force Institute of Technology, Wright-Patterson AFB, March 2008
- New documentary film 'Fastwalkers' on UFOs, ETs premieres in Phoenix, Review, American Chronicle, February 22, 2007
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