Not saying that it does. In fact, I totally agree with you about that, but that's the past. With the current situation, we can't dwell over could've and would've. Updates: (CNN) -- A convoy of military vehicles plowed through the flooded streets of New Orleans on Friday bringing food, water and medicine to the thousands of people trapped at a downtown convention center. The relief effort came as President Bush toured the Gulf Coast to survey damage from Hurricane Katrina and shortly after the mayor of New Orleans said the city was "holding on by a thread." The commanding general in charge of the relief effort in New Orleans was directing the operation from a street corner. He told the troops, part of a deployment of 1,000 members of the National Guard, to make sure they kept their guns down. (See video of the convoy roll through floodwaters -- 3:33) "A few moments ago, he stopped a truck full of National Guard Troops ... and said, 'Point your weapons down, this is not Iraq,'" said CNN's Barbara Starr who is traveling with the three-star general. NEW YORK (CNN/Money) - Hurricane Katrina and subsequent flooding in the Southeast could cost the economy more than $100 billion, which would make it the costliest storm to hit the United States, a company that assesses the impact of natural disasters said Friday. Risk Management Solutions said the economic impact includes damages from high winds and the coastal surge caused by Katrina as well as the flooding in New Orleans after levees around the city were swamped by the storm. The estimated cost of Katrina easily dwarfs the losses from Hurricane Andrew, which, adjusted for inflation, cost $43.6 billion in economic damages. RMS, based in Newark, Calif., on Monday forecast that insured losses from Katrina would total $10 billion to $25 billion. It made that forecast before levees protecting New Orleans, which lies mostly below sea level, failed, and has yet to update it.