Well done audio book. Graff compiled oral histories from hundreds of people telling their first person 9/11 stories. Graff takes us through the day - moving from New York to Alexandria, VA to Sarasota FL to a field in Pennsylvania - and back. The audio of Betty Ong talking with American crisis center was chilling.  Graff balances the horror of the day with stories of survival. Includes a chapter talking about the experiences of children from across the country - from a new born to college age students. 
I can’t imagine trying to read this as opposed to listening. Such a well done production.