Keywords: 9-11 commemoration 130911-D-BW835-310.jpg en From left President Barack Obama Secretary of Defense Chuck Hagel and Chairman of the Joint Chiefs of Staff U S Army Gen Martin Dempsey stand for the national anthem Sept 11 2013 during a remembrance ceremony at the Pentagon for victims of the attacks on the Pentagon Sept 11 2001 The three leaders joined family members of those killed 12 years ago for a private ceremony Terrorists hijacked four passenger aircraft Sept 11 2001 Two of the aircraft were deliberately crashed into the World Trade Center in New York one was crashed into the Pentagon the fourth crashed near Shanksville Pa Nearly 3 000 people died in the attacks 2013-09-11 DOD photo by Erin A Kirk-Cuomo/Released https //www dvidshub net/image/1017772 130911-D-BW835-310 2013-09-13 19 23 THE PENTAGON DC US PD-USGov Barack Obama in 2013 Martin E Dempsey Chuck Hagel Images from DoD uploaded by Fæ Twelfth anniversary of the September 11 2001 attacks |