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National UFO Reporting Center Sighting Report
Occurred : 6/6/2012 10:20 (Entered as : 06/06/12 10:20)
Reported: 6/8/2012 7:06:02 PM 19:06
Posted: 6/14/2012
Location: Chicago, IL
Shape: Sphere
Duration: 11:45
Characteristics: The object changed color, There were aircraft in the vicinity or aircraft chasing the object
flying serpent worm like object

I'm in construction so Wednesday they they had me flagging traffic on Irving park road between seymour ave & Taft ave. As I was' looking east in the direction of traffic I saw what at first I thought was a long black balloon it was about 20' degree angle and began to ascend. It seemed to Hoover and move as lava would in a lave lamp. From my position the object was in front of the john hancock building and began to move south west. I work around in on the airport I know what a plane looks like they were landing on a north east angle and taking off to the east the object was in between the flight pattern. As the object moved south west a plane kinda came close to it and it ducked in to the clouds.