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National UFO Reporting Center
Sighting Report
Occurred : 9/21/2018 06:45 (Entered as : 09/21/18 6:45)
Reported: 9/21/2018 1:59:04 PM 13:59
Posted: 9/27/2018
Location: Indianapolis, IN
Shape: Unknown
Duration:25 minutes or more
VERY unusual loud ongoing 'engine' noise for 25 minutes or more in the sky - invisible

This morning, at around 6:45 am, I was awakened by what seemed to be a very loud ongoing noise in the sky. We are in a flight path but this seemed to be not the usual airplane engine noise. It continued for at least five minutes, and I finally went out in my pjs and stood on the driveway at the back of our cul de sac.

The sky was whited out and nothing could be seen visibly in the sky. The sound, however, was like massive engines that had tones (f and g above middle c, half note measures) and underneath those tones was a low infrasound engine tone that sounded like low heavy steady wind. It was Extremely loud and ongoing and I kept wondering why no one else had come out of their homes to see what the source was. The Only thing I could come up with is perhaps it was a Massive cloaked mothership and or a fleet of same, flying low and slow.

It kept up for at least 20 minutes and then finally started fading off and I could hear it in the distance, it seemed to be heading southwest as far as distance sound. I'm wondering if perhaps other have heard this.