I can't believe the reviewers who couldn't understand this episode. Of course, the title refers to the day before 9/11. The flashbacks set the stage for all the main characters' decisions that led them where they are now. It was also a great tribute to the heroism and sacrifice of the people who stepped up on that fateful day, and it added so much to our understanding of the members of Bravo. I consider it the best episode of the show so far.
