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 a ceremony on a military base in Anchorage.

His visit, en route to Washington, D.C., from a trip to India and Vietnam, is a reminder that the impact of 9/11 was felt in every corner of the nation, however remote. The hijacked plane attacks claimed nearly 3,000 lives and reshaped American foreign policy and domestic fears.