In December 1996, in the Yukon region of Canada, more than 30 witnesses saw a giant UFO 4 times the size of a football stadium.
source
Thirty Witnesses Encounter The Biggest UFO Sighting Ever Reported | Close Encounters
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In December 1996, in the Yukon region of Canada, more than 30 witnesses saw a giant UFO 4 times the size of a football stadium.
source