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Navy developing new UFO reporting guidelines amid rise of unauthorized aircraft sightings - ABC News
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UFOs In US AirSpace: Hard Evidence, Edition 2 - Expanded: Project Blue Book - US Air Force UFO Case Files - Kindle edition by Chace, John Scott. Politics & Social Sciences Kindle eBooks @ Amazon.com.
Declassified document shows 'real' flying saucer > National Museum of the United States Air Force™ > Article Display
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