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National UFO Reporting Center Sighting Report
Occurred : 2/6/2011 20:00 (Entered as : 02/06/11 20:00)
Reported: 2/6/2011 11:04:03 PM 23:04
Posted: 2/8/2011
Location: Modesto, CA
Shape: Rectangle
Duration: 10-15 min.
Characteristics: There were lights on the object, The object changed color, There were aircraft in the vicinity or aircraft chasing the object
a rectangle object in the sky blinking on and off and changing from purple to red

we saw a rectangle shaped object that was first purple then changed to red and blinked on and off changing colors first it was heading south then changed directions and headed north it lasted about 10-15 min.