9/11 documentary 'What Happened on September 11' made to help kids understand terror attack

For students from elementary to high school, the Sept. 11 terrorist attack isn’t a memory. It’s history. A new HBO documentary that debuts on the event’s 18th anniversary treats it that way.

9/11 documentary 'What Happened on September 11' made to help kids understand terror attack
For students from elementary to high school, the Sept. 11 terrorist attack isn’t a memory. It’s history. A new HBO documentary that debuts on the event’s 18th anniversary treats it that way.