Sears Tower glass-bottom Skydeck

Who wants to walk on the "Sears Tower" glass bottom Skydeck?  We probably won't the next time we're in Chicago (Mommy hates the idea but says Daddy needs to get additional life insurance first if he's dumb enough to walk out there).

Four glassed-in outcroppings on the west side of the Sears Skydeck let visitors feel like they're floating over the city below. The ledge was inspired by similar decks at the Grand Canyon and Toronto's CN Tower. (Artist's renderings)