New York's World Trade Center Area Prepares To Mark 15th Anniversary Of Sept. 11th Attacks

NEW YORK, NY - AUGUST 17: People tour the National September 11 Memorial & Museum on August 17, 2016 in New York City. The presence of security on the street is a daily reality for the millions of residents and tourists who filter through the city. Lower Manhattan, previously dominated by the financial industry, has become one of Manhattan's top tourist destinations with memorials to the victims, shopping malls and historical landmarks. Fifteen years after the September 11, 2001 terrorist attacks, the area around Ground Zero has gone through significant changes but still carries reminders of that day when over 3,000 people were killed during the attacks in New York City and Washington, D.C. (Photo by Spencer Platt/Getty Images)