I lived in New Orleans in 1947, and the hurricane that hit there in Oct. of that year flooded low-lying areas badly...the latest news says that a category 4 storm might do irrereparible damage and kill thousands (front page of Washington Post, quoting Walter Maestri. an emergency manager for the city.) The levees are only designed for a category 3. Lets hope the man is being over dramatic, but if he is not, then one of the most vulnerable cities in the country has been living on borrowed time for many years.......