A picture of Shai Levinhar, who was killed during the terrorist attacks, hangs on a fence at Ground Zero ceremonies commemorating the 911 Islamic terrorist attacks September 11, 2007 in New York City. Today marks the sixth anniversary of the September 11, 2001 terror attacks, when Islamic terrorists hijacked airliners and flew them in the World Trade Center and the Pentagon. By Chris Hondros/Getty Images. More memories of this faith-based massacre here.