Inexplicable - via Brendan Loy from the Washington Post.

"The only thing I can say to them is I hope they have a hotel room, and it's a least on the third floor and up," Nagin said [to tourists on Saturday before Katrina hit]. "Unfortunately, unless they can rent a car to get out of town, which I doubt they can at this point, they're probably in the position of riding the storm out."

In fact, while the last regularly scheduled train out of town had left a few hours earlier, Amtrak had decided to run a "dead-head" train that evening to move equipment out of the city. It was headed for high ground in Macomb, Miss., and it had room for several hundred passengers. "We offered the city the opportunity to take evacuees out of harm's way," said Amtrak spokesman Cliff Black. "The city declined."

So the ghost train left New Orleans at 8:30 p.m., with no passengers on board.