I was 12 and my sister was 14, but I saw the shape before her and I ran downstairs to get mom first.I got my sister to go out, that's when it happened.
There was a large humming, black giant hole in sky above us in back yard with stars around the black circle.
Then it hummed very loud and heard a zip.
A bone throbbing deep noise that we both felt, then the noise built up to a high pitch.
Straight up then we saw the stars again where the black circle was.
I first saw it through binoculars while looking at planes coming into Ogden Airport, no one has ever believed us.
I'm 67 years old now, but can still see & hear & feel that deep thrumming.
And the blank hole over our backyard until the noise and the stars where it was black.
I was 12 years old for Hells sake.