Under Secretary of the Army, HON Dr. Joseph W. Westphal, views the World Trade Center construction site from the 20th floor of 1 World Trade Center. Now soaring to 81 floors, construction is nearly complete and officials it is scheduled to open in 2013. Once complete, 1 World Trade Center will be the tallest building in North America. Dr. Westphal received a tour of the ground zero construction site and brief on the preparations being made to commemorate the 10th anniversary of the attack on the World Trade Center during his visit in New York City, August 12, 2011.