rectangular, transparent, huge object with points of red lights at each intersection moving slowing and low through the night sky.

It was late in the evening in December 1986, when I walked out of my house to have a cigarette.  Two family members went with me.  
As we stood talking, a very huge object became noticeable in the sky passing over our house.  It appeared to be very low in the sky, but was difficult to actually tell just how high.  The shape was odd because it looked like a rectangular building on its side with red points of light at each intersection. Must have been around 8 -10 points of light.  The strangest thing was that it seemed transparent.  We could see the sky through it even though it was a mass of some kind that we could tell was moving through the sky.
The object made absolutely no sound and was moving what seemed to be very slowly, almost as if it was floating.  As I said, it was huge.  It was not a formation.  We could actually see an outline of the object as it moved.
As it was very close to Christmas, it never even crossed my mind when I went in to report this strange object to the local Sheriff’s Dept., that they might think I was perpetrating a hoax.  When the Sheriff’s Department came on the line and I proceeded to ask if anyone had reported an object going over the town, I suddenly realized that they may think I am pulling a prank relating to Santa Claus.  I was a little embarrassed, but they said no one else had reported this.  In later years I also reported it on, I believe, MUFON, when it was not required that you pay a membership.
Almost twenty years later, a security guard and one of my family members, who had witnessed this event,  were talking and the security guard related a sighting he had at the same time and the same description (before this family member ever said anything to him). 
Amazing!
Witness indicates that the date of the sighting is approximate.  PD