Two flying wings (?) over Sherwood, OR night sky.

this is sighting from either 1981 or 1982. i don't remember which month or day or time of day, other than it was night.  it could possibly have been in the fall, judging by the amount of clouds in the sky.
it was in Sherwood, Oregon, at XXXXX  SW pacific Hwy, near six corners.  this address no longer exists, or at least the house at this address no longer does.  the gas station just N of it is still there, however.  there was a bar W across the hwy. not sure if that still exists.
in place of that area where the address was is now a road, going about E, i believe.
 one evening, upon looking up into the night sky (as was my habit) on my front stoop, facing N, i was surprised and delighted to see two unusual objects straight above me.  They were flying what i figured to be about as low as a passenger jet readying for landing, for i also figured they were at least just as big.  i watched them carefully, not taking my eyes off of them. they made no sound.  even with the street traffic, i can hear aircraft that fly that low.
the sky was patched with clouds.  The sky where i saw the craft was cloudless and dark and starred with the night.  the objects were as dark as the dark sky, with wings near the angle of flying wings. there were at least eight white lights on the backs of the wings, like one would see on the wings of a passenger jet.  there were no headlights, no blinking wing lights, no tail lights, blinking or otherwise and no body lights.
There was no body per say and no tail.  It was just a wing, kind of a long triangular shape, but with a dip in the back middle.
They were side by side, wing tips nearly overlapping. One of the "wings" was slightly in front of the other.  As they were both moving across the sky, the one behind moved just slightly in front of the one that was in front before.  Also, the angle of the "wings" was a bit different for each craft.
They flew slowly north and disappeared into the clouds.  I saw them for about a long 15 seconds.
 I reported it to the Oregon chapter of Mufon, I think it was a few years ago.  They came back with a link or links to aircraft pics for me to look at, to see if it looked like any of them.  The flying wing was the closest; however, the wing angle was different. They said that either stealth or the flying wing (don?t remember which they said.  Cant find the report in my puter stuff) wasn't known of by the public in 1981/82.
I told them that I knew of the flying wing at least by then, if not before. I had sent them links to the aircraft that looked most like in part, as well as links to flying wing sites and pics. Never heard back from them since.
Witness indicates that the date of the sighting is approximate.  PD