As Katrina roared into the Gulf of Mexico, emergency planners pored over maps and charts of a hurricane simulation that projected 61,290 dead and 384,257 injured or sick in a catastrophic flood that would leave swaths of southeast Louisiana uninhabitable for more than a year. These planners were not involved in the frantic preparations for Katrina. By coincidence, they were working on a yearlong project to prepare federal and state officials for a Category 3 hurricane striking New Orleans. Their fictitious storm eerily foreshadowed the havoc wrought by Category 4 Katrina a few days later, raising questions about whether government leaders did everything possible...to protect New Orleans residents from a well-documented threat.