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National UFO Reporting Center
Sighting Report
Occurred : 12/9/2017 21:15 (Entered as : 12/09/17 21:15)
Reported: 12/9/2017 9:03:47 PM 21:03
Posted: 12/10/2017
Location: Avon, CO
Shape: Formation
Duration:8+ minutes
~15 Vertical flashing red lights headed west in Colorado

There were approximately 15 flashing red lights in a vertical formation. They were seen headed NW, and then shifted to W. The lights were flashing in sync, and appeared to have an effect of “falling” - as the lights traveled farther in the distance over the mountain, the blinking appeared randomized. When we first saw it, it looked like a cell phone tower, because off how straight the lights were; after it was in the distance, it looked more like a grouping, in no particular order.

There was no detectable sound.

Dogs in the neighborhood were barking loudly. Usually one barks at a deer or two, but to hear many dogs barking at 9:15pm was odd.