At one point Friday, the evacuation was interrupted briefly when school buses rolled up so some 700 guests and employees from the Hyatt Hotel could move to the head of the evacuation line — much to the amazement of those who had been crammed in the stinking Superdome since last Sunday. "How does this work? They (are) clean, they are dry, they get out ahead of us?" exclaimed Howard Blue, 22, who tried to get in their line. The National Guard blocked him as other guardsmen helped the well-dressed guests with their luggage. The 700 had been trapped in...