Relatives and loved ones of 9/11 victims will convene Sunday to mark the 15th anniversary of the terror attacks. Organizers have planned some additional music and readings to mark the milestone anniversary at ground zero. But they are keeping traditions that have made the ceremony a constant in how America remembers Sept. 11, even as ground zero and the nation changes. President Barack Obama will speak at an observance at the Pentagon. Hundreds of people also are expected at a ceremony at the Flight 93 National Memorial in Shanksville.

Source: Fox News September 11, 2016 04:18 UTC