Silver ufo stands still in the blue sky, and suddenly disappears.I was around 16 years old when I saw the ufo. I was out in the afternoon for some football with a friend. When he went to catch the ball, I just saw that disk shaped, silver coloured object, standing absolutely still in the blue sky! No engine sound, no smoke from the turbines (like airplanes do), so I guess it was a ufo! When I turned my head to see where my friend had gone and then back to the sky, it had disappeared in thin air! After a few minutes, there it was again, in a different loction, but again still and soundless. It was quite far away too. Then it disappeared again and that was it…((NUFORC Note: Date is approximate. PD))