Husband and I were driving on the interstate near the Deyo, OK. Exit sign..saw that sign a few minutes after our UFO incident, made it a point to remember just where we saw the unusual sights we witnessed...we seemed to be the only drivers on the road also..we were heading east. Husband looked out he window to the north and saw this low flying sphere which looked to be made of glass, at least it was shining like the brightest reflection, and then behind it came another one....when I looked over, I just thought how odd, and wondered what kind of artillery was being used, that we should actually be able to see some type of (??) being propelled horizontally across the sky...at a very fast rate of speed...then all of a sudden they veered upward heading almost towards an imaginary two if on a clock face....and there was a black circle in the bottom of the one my husband viewed, with a heavy yellow jet stream of exhaust coming from it....since I was on the other side of the auto, the UFO's left my line of vision sooner than they did for my husband, who was craning his neck and looking out of our van, to continued viewing them as they sped out of sight...all this happened so quickly, we were puzzled as to what we'd seen. but it was in an airspace which was between Lawton and Ft. Sill....military base areas...to our understanding....we are sr. citizens, and our kids still think we are crazy....but it did happen.....and it was on Mother's Day, of that year....we'll never forget it..they looked like round mirrors reflecting in the bright sun....(please no name..) we'd had enough ridiculing over this........thank you