Read the excerpt from part 1 of Zeitoun . All day Zeitoun and James saw people lined up at bus stops—those who planned to stay in the Superdome. Families, couples, elderly men and women carrying their belongings in backpacks, suitcases, garbage bags. Seeing them exposed like that, as the winds picked up and the sky darkened, worried Zeitoun. He and James passed the same groups, waiting patiently, on the way to their job sites and on their way back. What is happening in the excerpt?