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National UFO Reporting Center
Sighting Report
Occurred : 2/16/2016 00:15 (Entered as : 12:15)
Reported: 2/16/2016 11:21:35 PM 23:21
Posted: 2/19/2016
Location: Rapid City, SD
Shape: Unknown
Duration:>1 hour
Sounds in the middle of the night.

Strange humming sounds during the night. It goes on and off like a car trying to start. Then it turns off. Like it powers down. Like a *whewwww* then its silent. I have no idea what it is. It's not like a trumpet, its more like a humming sound.

((NUFORC Note: Witness elects to remain totally anonymous; provides no contact information. PD))