National September 11 Memorial Museum

I spent the day at the 9-11 museum with Andrea, Bobby, Billy, Emily, Josh, Helaine & Norm. It was impressive, a chilling reminder of my US Open trip to NY in 2001. The buildings came down 2 days after the men's final.

There was a graphic with some interesting figures. Here are some of the amazing facts:

• Approximately 50,000 people worked in the World Trade Center each day.
• Each floor was an acre in size.
• Each tower had 110 floors.
• There were 198 elevators in the Twin Towers & 15 miles of elevator shafts.
• Each express elevator could hold 55 adults.
• There were 43,600 windows in the Twin Towers & it took 2 months to wash them all.
• The World Trade Center contained 12 million square feet of office space.
• It took 10 carriers to deliver all of the World Trade Center's mail each weekday.