For nearly an hour Sunday, four UFOs traveling in unison captivated motorists in Matteson, IL. Two motorists filmed the event for about four minutes, but the encounter lasted nearly an hour.

Of course, people in the Chicago region are always alarmed when something mysterious occurs in the sky. O'Hare Airport is known as a hotbed of alien craft activity, and was the scene of a famous sighting in November of 2006 which still hasn't been explained by the government.

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