see more

NEW YORK, UNITED STATES - SEPTEMBER 10: Placed roses, an US flag and a picture of a victim are seen at the National 11 September memorial, a day before the 15th anniversary of the 9/11 attacks in Manhattan, New York, USA on September 10, 2016. (Photo by Mohammed Elshamy/Anadolu Agency/Getty Images)

NEW YORK, UNITED STATES - SEPTEMBER 10: Placed roses, an US flag and a picture of a victim are seen at the National 11 September memorial, a day before the 15th anniversary of the 9/11 attacks in Manhattan, New York, USA on September 10, 2016.  (Photo by Mohammed Elshamy/Anadolu Agency/Getty Images)