S38, E11: From PBS and NOVA - On the 10th anniversary of 9/11, NOVA presents an epic story of engineering, innovation and the perseverance of the human spirit. With extraordinary access granted by The Port Authority of New York and New Jersey, this program follows the five-year construction of One World Trade Center (1 WTC) and the National September 11 Memorial and Museum. NOVA captures the behind-the-scenes struggle of architects and engineers to make the buildings safe and highly secure under the pressures of a tight schedule, the demands of practical office space and efficient, "green" architecture, and the public's expectations of a fitting site for national remembrance. Featuring interviews with 1 WTC architect David Childs; Chris Ward, executive director of the Port Authority of New York and New Jersey; Mayor Michael Bloomberg, chairman of the 9-11 Memorial Foundation; and Michael Arad, the man behind the breakthrough concept for the 9-11 Memorial.