In photos: U.S. marks 19th anniversary of Sept. 11 attacks
Friday, September 11, 2020 - 09:11
in Earth & Climate
Ceremonies in New York City, Pennsylvania and Washington, D.C., mark the 19th anniversary of the Sept. 11, 2001 terrorist attacks. Nearly 3,000 people were killed when terrorists hijacked four airliners and crashed them in the deadliest terrorist strikes ever on U.S. soil.