11 young adults sighted dark "kakhi disk or saucer above treetops, daytime; followed in [car] as it [spiraled] away.

There were 11 young adults (approx. ages 17-25)about equal distribution of male/ female, of which I was one; we were on the outskirts of a university campus. -- The unidentifiable "flying" object was directly over the treetops, traveling quite slowly.  It was a medium olive-brown or dark "kakhi" in colour, and probably the size of a small bungalow. I do not recall seeing inhabitants, nor any of the group referring to or noticing "inhabitants". -- We piled into a motor vehicle and tried to follow it; it gradually ascended in a semi-cylindrical pattern, increasing speed, and we lost sight of it. -- I am rather certain this occurred on a Saturday or Friday afternoon, as we were on our way to a party or some sort of gathering at first. One of the boys said he knew about a military person (there are several bases in the area, only one of which was Ft. Campbell, KY)of whom he could inquire whether any other reports had been received. -- This guy and I talked via telephone the next day around 16:00k or 17:00k; he said he was told it was a military "experiment" (I think he said Airforce, but he could have said "army experiment", too). -- It is interesting that I remember this much of it so clearly, perhaps because there were 10 other "peers". -- However, none of us have been in touch for the past 30 yrs. at least, and probably none of us would know each other by sight, or even by name in most cases. I've no idea if any but myself still exist.
Date is approximate.  PD