Aerial suspension of lighted objects as a hoax could be considered a possibility, particularly with the event occurring on two consecutive auspicious dates popular with pranksters: Halloween.
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On the Saturday, August 21 occurrence, the conspicuous objects were in full view of gridlocked traffic making egress from Tinley Park's 28,000 seat First Midwest Bank Amphitheater (at that time called Tweeter Center) where Ozzfest had just ended, creating another aggregation of observers.
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