Disc follows fighter jets to air base.

This sighting occurred in October of 1988 on south 58th Street in Tacoma, WA.  
I had descended my front stairs while watching a pair of F-15 Fighter jets heading into Mc Chord AFB on approach.  Outside of the rear aileron of the outside jet was a disc that was brassy in color, thin and 3-4 feet in diameter.  I doubt if the pilots were aware of it.  The sky was broken clouds with partial sun.  The jets were several hundred feet off the ground and traveling about 250 mph.  As they passed above me, the disc broke off and headed in a south easterly direction towards Mount Rainier.  I mentally attempted to convey my interest in having it come back.  It did. It circled around and parked itself above a telephone pole across the street. I was terrified.  I felt like I was being mentally raped.  
After about 30 seconds, it headed due north at a blistering rate of speed.  
This sighting has not been a subject of a specific regression.  
I am not aware of anyone else that saw it.
Witness indicates that the date of the sighting is approximate.  PD