DON'T. LOOK. DOWN.

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DON'T. LOOK. DOWN.
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According to staff at Willis Tower, the cracked portion you see here was a part of the safety seal of the observation platform and not the glass itself. Still, that's the last thing you want to see when you're suspended that high in the air.

Close Call of the Day: Czech Man Almost Hit by Train

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CCTV footage released by the Czech police shows the 77-year-old hurrying across the tracks. The man escaped serious injury, but will be receiving a fine for his reckless behavior. The worst thing is that none of the drivers stopped to help him.

Close Call of the Day: Sky Divers Catch Mid-Air Plane Collision on Camera

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Two airplanes carrying sky divers collide in mid air over Wisconsin. All the passengers miraculously survived, and the footage was caught on camera.