U.S. commercial air carriers continue transporting tens of thousands of evacuees from the New Orleans airport to destinations throughout the nation. Rooftop air rescue efforts continue. One rescue chopper crashed late today. Crew members are reported safe. Gunmen who fired upon bridge repair contractors were killed by law enforcement. To date, an estimated 70 countries and U.S. businesses have pledged hundreds of millions of dollars, supplies, food and equipment to assist the United States' efforts in Katrina's aftermath. Lt. General Honore described the damage to Mississippi today, "all infrastructure south of Jackson, MS is either damaged or destroyed." Secretary of...