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National UFO Reporting Center
Sighting Report
Occurred : 3/5/2004 04:30 (Entered as : 03/05/2004 4:30)
Reported: 3/5/2004 6:13:05 PM 18:13
Posted: 3/9/2004
Location: Valencia, CA
Shape: Light
Duration:30 seconds
Very low, loud oscillating sound, 3 streaks of thin green light

At approximately 4:30am, I woke up to an incredibly obscene, low oscillating sound. It started as a hum, and grew louder and more pronounced. It was similar to a helicopter whump except that it was enormous, much louder and with more resonance. I am very familiar with helicopter, jet and prop aircraft sound. I never get out of bed for the usual aircraft noises, but this was so strange that I shot out of bed and looked out the window by instinct. At that point, the low, humming grew louder and almost with a bang, I saw at least 3 thin streaks of green light, close together at low altitude travel from south to north very quickly. I am not sure if this was 1 aircraft or multiple, as I was unable to pick out a shape. The noise faded out quicker than it appeared. Total experience time was approximately 30 seconds.

My initial thought was that it was one gigantic helicopter that I have never heard before. My second thought was that it was a group of smaller helicopters very close together. After thinking about it further, the sound made me change my mind and refer to it as "experimental aircraft" because the sound was incredibly unique, the direction of travel was inconsistant with the usual aircraft overhead, altitude was very low and speed was very high compared to usual aircraft overhead. I just can't get over the sound, which was so unusual, I decided to write this report.