First Midwest Bank Amphitheatre (formerly Tweeter Center Chicago), located in Tinley Park, Illinois, near Chicago, Illinois
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Susquehanna Bank Center (formerly Tweeter Center at the Waterfront), located in Camden, New Jersey, near Philadelphia, Pennsylvania
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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.