US remembers 9/11 as pandemic changes tribute traditions

FILE – In this May 31, 2018, file photo, visitors to the Flight 93 National Memorial pause at the Wall of Names honoring 40 passengers and crew members of United Flight 93 killed when the hijacked jet crashed at the site during the 9/11 terrorist attacks, near Shanksville, Pa. Families impacted by the terrorist attacks say it's important for the nation to pause and remember the hijacked-plane attacks that killed nearly 3,000 people at the World Trade Center, at the Pentagon and near Shanksville on Sept. 11, 2001, shaping American policy, perceptions of safety and daily life in places from airports to office buildings.