US flag on part of a 9/11 memorial overlooking the New York skyline from Exchange Place, Jersey City, New Jersey
US flag on part of a 9/11 memorial overlooking the New York skyline from Exchange Place, Jersey City, New Jersey (© Gary Hershorn/Getty Images)
20 years later
The glassy lower Manhattan skyline is so pristine it's hard to fathom the tragic scene it became 20 years ago today. But this twisted beam resting on the Hudson River's shores is one of many reminders.
© Gary Hershorn/Getty Images