In this May 13, 2011 file photo, waterfalls empty into a massive reflecting pool at the National September 11 Memorial in New York. Ten years after terrorists destroyed the World Trade Center, the new World Trade Center is rising from ground zero. The memorial is scheduled to open to the public on Sept. 12, 2011. The skyscraper formerly known as the Freedom Tower is growing by a story a week and now pokes above the skyline as the tallest building in lower Manhattan. (AP Photo/Mark Lennihan, File)