DALLAS_Nearly 3,000 people died Sept. 11, 2001, as hijacked planes flew into the World Trade Center, the Pentagon and a Pennsylvania field.
The attacks changed the world, creating a generational divide between those who came before and those who came after.
Children who were born that year are now in high school. Their parents and teachers are still searching for ways to explain why 19 men would carry out such a horrific plot against the United States.
On the 15th anniversary, we share the stories of four Americans who are trying to pass on the history they watched unfold.
