A U.S. flag hanging from a steel girder, damaged in the Sept. 11, 2001 attacks on the World Trade Center, blows in the breeze at a memorial in Jersey City, N.J., Sept. 11, 2019 as the sun rises behind One World Trade Center building and the re-developed area where the Twin Towers of World Trade Center once stood in New York City on the 18th anniversary of the attacks. (AP Photo/J. David Ake)