In December of 2019 the Denver Post began reporting a strange pattern over the night sky of northeast Colorado. Around 7pm each night, at least 17 drones -- large ones -- emerged from somewhere and flew over the region in what appeared to be a search pattern, disappearing between 9:30 and 10pm. No one, from federal agencies on down, seemed to know where these drones were coming from, who controlled them, or what they were doing up in the sky. If, that is, they existed at all.

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