Cracks appear on floor of glass viewing platform in Chicago’s Willis Tower

benedek/iStock(CHICAGO) — Visitors to Chicago’s Willis Tower, the city’s tallest building, captured video that appears to show cracks in the glass floor of its SkyDeck ledge 103 floors above ground. A Willis Tower spokesperson told ABC Chicago station WLS-TV that “no one was ever in danger.” “The protective coating, which acts like a screen protector …

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