Willis Tower skydeck cracks under guests' feet | 10News WTSP
A glass observation deck on a Chicago high-rise cracked under guests' feet, causing a scare Monday.
CBS reports the shattered protective glass layer covers the glass bottom of the deck on the 103rd floor of the Willis Tower.
A witness said a woman and two kids were on the deck when the glass broke.
10:36 PM EDT June 12, 2019