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. “The explosion of that plane going in, was probably ten times louder than any dynamite I ever heard,” Slade told The Epoch Times in an interview. “I couldn’t see it, but I certainly heard it and felt it.” The crash site was on the other side of a mountain ridge. Slade quickly drove over to check on his son’s house, which was an eighth of a mile from the crash site. He saw smoke, smoldering trees, and the first fire truck from Shanksville arrive. “You couldn’t see a plane,” Slade said. …