Flight 93 Responders Recall a Time When 9/11 Attack Unified America

Before the Flight 93 National Memorial was built, busloads of people stopped at this fence near the crash site in Shanksville, Pennsylvania to grieve. Chuck Wagner/"Reflections from the Temporary Memorial"

The Flight 93 National Memorial near Shanksville, Pennsylvania, was once a coal strip mine.

On neighboring land, Camp Allegheny’s then-Executive Director Duane Slade recalls the mine used many charges of dynamite at once, creating loud booms as they crumbled the earth. But it was nothing compared to what he heard on Sept. 11, 2001, when Flight 93 crashed there.