Americans are looking back on the horror and legacy of 9/11, gathering Monday at memorials, firehouses, city halls and elsewhere to observe the 22nd anniversary of the deadliest terror attack on U.S. soil.
Commemorations stretch from the attack sites — at New York's World Trade Center, the Pentagon and Shanksville, Pennsylvania — to Alaska and beyond. President Joe Biden is due at at a ceremony on a military base in Anchorage.
