This combo image shows two documentations before and after the September 11, 2001, terrorist attack in New York City. (Top) New York’s Empire State Building is illuminated at sunset in the colors of the British flag in honor of Princess Diana Thursday, Sept. 4, 1997. (Below) Smoke from the burning towers of the World Trade Center is blown east behind the Empire State Building on Sept. 11, 2001, following the terrorist attacks. (AP Photo/Michael Schmelling (Top), Marty Lederhandler (Bottom))
