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National UFO Reporting Center
Sighting Report
Occurred : 9/13/2011 23:30 (Entered as : 9/13/2011 23:30)
Reported: 9/13/2011 10:27:01 PM 22:27
Posted: 10/10/2011
Location: New Carrollton, MD
Shape: Unknown
Duration:several seconds
Loud Sonic Booms Heard Followed By Helicopter In Maryland

A set of powerful Sonic Booms where heard but NOT like from jets etc, it came from the entire sky, and it was so loud that everything in my area STOPPED, literally everything and everyone came to a stand still, I swear I thought we here in the DC area were under attack, I even held my breath and braced myself there momentarily waiting for impact, it had a small whistling sound too I think, shortly after a helicopter must of gone past right over my house because I heard a strong sound of the whirling blades and the apartment shook a little bit. I really did think we were under attack, I thought a nuke or something was targeted to the DC area.

Oh thank God it wasn't that but now I am left wondering what WAS that?. Even my neighbor came out.