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National UFO Reporting Center
Sighting Report
Occurred : 12/17/2014 02:30 (Entered as : 12/17/14 02:30)
Reported: 12/22/2014 8:46:04 PM 20:46
Posted: 1/7/2015
Location: Rapid City, SD
Shape: Unknown
Duration:1 hour
Pulsing noise, purposely did not look for craft. Three seperate nights. Gets louder and faster as gets closer.

Noise. Pulsing noise; 'wom.....wom...'; etc. Started outside, sounded as if above house, coming from specific direction. Never heard similar. Pauses betwen pulses exponetially decreased, as duration of pulses slowly increased, as did volume of noise; as time went. Sounded as if moving, changing direction slightly but on general course of down, toward window. Right outside window: did not look. Loud, 'wom.wom.wom.wom'.

Left room. Then began hearing high-pitched, but very quiet Hertz-frequency-noises inside the room, exactly on one, and then the other side of bed; alternating. Did not see anything. Occasionally heard slightly higher-pitched 'wom' pulsing noise outside of room. Not cool.

Happened on Dec 19th, Dec 21st as well. Today is Dec 22nd.

Do not like these visits. Never experienced anything like this, always been a skeptic.

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