The object seemed to be triangular in shape due to the setting of approx.7-8 red lights. It seemed to be larger than a football field, noiseless, and glided directly above railroad tracks by train station. it was moving at about the speed of 5mph (we walked right under it as it barely moved above us.

We then witnessed a bright white light come from the center of the underside of the triangular formation. The light split into two and they flew over the fields of the area.  
Another came out in the same fashion and scanned the fields as well. i'd say at the speed of a cessna type plane. the third light to come out grew intensly bright and flew right back in to the "mother ship".  It then popped back out again immediately and split in two, following suit with the other 4 "scouts".  The triangle continued to follow the tracks and we watched until it was out of sight and the scouts were gone as well.
The mothership was immense!  Noiseless!  Moved at a slow rate of speed.  It did not move erratically, just continued on a straight path over the local train station tracks. The red lights at the corners and along the edges were very bright.  The 6 scout ships were of a bright white color that remained solid as they flew at a speed of a Cessna airplane.  They flew over the farmfields in that area as if they were scanning something.  When they came out of the mothership, they would appear as one bright white light splitting into two separate crafts.  Concerning the 3rd light to come out of the mothership:The other 4 scouts were already moving along the skyline of the fields.  The 3rd light came out, grew intensly bright white (whiter than white)then immediately flew back in to the craft.  We watched this happen at about 1000ft above our heads.  We had to look directly straight above us.  It then came out again, almost immediately, grew intensly bright white and split into 2 crafts.  
I remember running to the high grass in the fields after that because we were so scared.  We watched them until they were out of sight.
Witness indicates that the date in September 1990 is approximate.  PD