Went out in the front of our house to see the space station fly over and felt the need to look up and saw 2 spheres about 2 minutes after the space station went past about same speed and coarse even my wife saw them and she saw the same thing when the Russian and US space stations went over, but thy came down in the hills in back of our house and she stated that they accelerated like something from Stare Trek My feeling well I live in Las Vegas I see them all the time I get a feeling to look up and there thy are Don't remember the date but I looked up and saw 2 jets large and small chase jet saw 2 white contrails and one yellow the yellow stopped shaped like sphere and the chase jet flue around it then flue back to the other jet the sphere doped like a rock vary fast, next day same thing but one big jet , I was on the free way.