My friend and I were watching the sky, when a row of lights was hovering, then made a zigzag move, and disappeared.

The object was a row of lights.  It might have been several craft in a straight line, but I'm not sure.  It didn't have any beacon lights. The color of the lights was white or yellow, but I don't remember exactly.  At the time, I was 9.  Don't think that I was young and made a mistake, I was sure of what I saw, because my friend saw it too.  He was 10.  We both were at an astronomy night at my school, and we were the only ones that saw it, as far as we know.  It was visible to the naked eye.  It was either very large, or very close.  Since it was at night, it was hard to tell how large or far it was.  It was just hovering, and we were watching it from the north, so it was south of us. we were on an asphault campus maybe 80-100 yards north to south.  We spotted the UFO over a tree that was about 100 yards away, and maybe 50 feet high.  From our view, the thing was as long as the tree is wide (including the branches).  About 10 seconds of watching it, it started moving west, but made a zigzag, and moved east, somewhat downward, until it disappeared behind some trees and buildings.  I seemed a little slow, but if it was as large as a Boeing 747, it was moving a little faster than a 747 5 miles from the runway.  I have another sighting, but it isn't mine, so I just want to say, my dad and brother saw the same thing almost exactly 3 years later, only it moved a little faster. It was near the same spot too, only a block away.