FILE PHOTO - A firefighter walks amid rubble near the base of the destroyed World Trade Center in New York on September 11, 2001. REUTERS/Peter Morgan

FILE PHOTO – A firefighter walks amid rubble near the base of the destroyed World Trade Center in New York on September 11, 2001. REUTERS/Peter Morgan

FILE PHOTO - A firefighter walks amid rubble near the base of the destroyed World Trade Center in New York on September 11, 2001. REUTERS/Peter Morgan

September 9, 2016 1:29 PM (UTC+8)