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201204 sightings reported...
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Boulder, Colorado (United States)

Sighted on Saturday 09. December 2017
Reported on
Shape: N, A | Duration: 00:11:00
Source:

String of silent sequentially blinking red lights moving east to west over boulder. took video which failed to capture the intense red. but showed the lights blinking in an odd pattern. no sound (other than the train passing by). looked like they may have been connected as they maintained a reasonably rigid pattern.

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