2005-09-24 - Chicago, IL - Oval

Two oval objects flying high over Chicago Sky

The sky was very clear and was able to see many commercial aircrafts flying too. But I have seen clearly two relatively small ovals (compared to seen aircrafts) flying apparently on much greater altitude. At the begining I though it is a ballon, but because I observed an organized movement pattern (zigzag) towards one direction (north east) I was surpurized. It took approximately 5 minutes for the two objects to pass over Chicago sky in almost the same path (one follow the other with huge distance between). The objects were surrounded with a hallow zone. Both kept flying and they started becoming smaller as they go higher and disappeared. The speed was almost constant (but even slower than the lower altitude aircrafts). I have seen the two objects clearily for the first time in my life!