Before you go on the tour, there is a 23-minute documentary film on the attack. Who is the lady that narrates the movie? A friend of mine said it was Stockard Channing, but I don't think it was her. I thought it was another actress.
BTW, if you have not gone on this tour, do it at least once in your lifetime. It is amazing and the whole tour will hit you like a ton of bricks.