UFO Sighting in Bethlehem, Pennsylvania on 1990-12-20 21:00:00 – Mothership. discs leave keep coming lower then ascend back to mothership.

The following exert is an eye witness statement. Please read into it what you will. This has been reported to mufon who I am sure are investigating:

1) talking
2) looked up
3) i am pilot. stationery ufo.
4) green huge mothership.Stationery. est alt. 100k feet. symmetrical lights. discs came from. did aerobatics. lower and lower. power out as come near. after 15-20 minutes return mothership. mothership speeds up and away in seconds.
5) i am a physician. i was not surprised.
6) spec away upwards.