CNN.com - Chertoff: Katrina scenario did not exist - Sep 4, 2005

CNN.com - Chertoff: Katrina scenario did not exist - Sep 4, 2005: "WASHINGTON (CNN) -- Defending the U.S. government's response to Hurricane Katrina, Homeland Security Secretary Michael Chertoff argued Saturday that government planners did not predict such a disaster ever could occur.

But in fact, government officials, scientists and journalists have warned of such a scenario for years."