Before the world-changing events of 9/11/2001, Americans’ exposure to terrorism was mostly secondhand—perhaps watching video images of a bombed-out Oklahoma City building in April 1995, or reading newspaper stories of a botched World Trade Center bombing in February 1993. Millions, however, on that momentous Tuesday morning of September 11, were watching live television coverage of one burning skyscraper, when another jet suddenly appeared—and then crashed into the second WTC tower!