[Bernard Marx]

What was spooky was that it was making absolutely no sound that I could detect.

Your description is almost identical with a craft my wife saw near San Luis Obispo, CA: lots of lights, fairly low altitude and absolutely silent. One more really odd thing: it seemed capable of making right-angle, not curved, course changes. She said it appeared to be V-shaped. That part of CA isn't too many flight miles from Area 51 and we've always figured it was a military test of some kind.

[Errant]

Yeah, this craft appeared to be V-shaped but really hard to say since all I could really see were the lights. I saw it inside a MOA, in straight and level flight, passed overhead, appeared huge, no sound, no idea its actual altitude or speed (though likely less than 200 knots) as seen from the ground about 10 years ago.

I guess it could have been more than one craft or maybe a group of special force guys in formation using some kind of quiet para-sails or something.