Mary Altaffer/AP PhotoPresident Barack Obama delivers remarks during a ceremony at the Pentagon commemorating the 15th anniversary of the 9/11 attacks, Sept. 11, 2016. BRENDAN SMIALOWSKI/AFP/Getty ImagesPresident Obama attends a ceremony at the Pentagon commemorating the 15th anniversary of the 9/11 attacks, Sept. 11, 2016. NICHOLAS KAMM/AFP/Getty ImagesA mourner holds a photo of a loved one during the 15th anniversary ceremony in New York City commemorating the 9/11 attacks, at the National 9/11 Memorial, Sept. 11, 2016. Mark Wilson/Getty ImagesMourners hold photos of loved ones at ceremony commemorating the 15th anniversary of the 9/11 attacks, Sept. 11, 2016, in New York. Jared Wickerham/AP PhotoAn American flag stands amid names on the 9/11 memorial before the start of the 15th anniversary memorial service to 9/11 victims in New York City, Sept. 11, 2016.

Source: ABC News September 11, 2016 17:01 UTC