WHAT HAPPENED ON SEPTEMBER 11 is an HBO Family documentary introducing the events of 9-11 to a young audience. Directed and produced by Amy Schatz. Produced by HBO in association with the 9-... Read allWHAT HAPPENED ON SEPTEMBER 11 is an HBO Family documentary introducing the events of 9-11 to a young audience. Directed and produced by Amy Schatz. Produced by HBO in association with the 9-11 Tribute Museum.WHAT HAPPENED ON SEPTEMBER 11 is an HBO Family documentary introducing the events of 9-11 to a young audience. Directed and produced by Amy Schatz. Produced by HBO in association with the 9-11 Tribute Museum.