Fall, clear, full visual disc sighting unbelievable air manuevers ,speed , brightness.

north side of Escuidia mtn. clear/near full moon great illumination.  60 degree directly west seemed to appear out of nowhere like a meteor except it spotted hovered at approximatly 30 to 40 thousand feet ,1/4 diameter print..went generally north and lowered to 10,000 changing direction and altitude suddenly as it proceeded covering at least 100 miles of sky in an instant then change 50 miles in another sharp direction change.  Many times after it did those impossible manuvers it would pause several seconds. Once it made it to 2500 ft. it suddenly reversed back to close to its original position so fast that it was a bright blur to the eyes and vanished. My dad was a pilot at the time and I was a student of airplanes for years we both watched  the whole thing and still refer to that camping trip every time we meet.