A man walks away from a car that crashed and killed an unidentified man who lost control of the vehicle as hurricane Katrina struck on the I-10 highway outside of Pensacola, Florida,. A man walks away from a car that crashed and killed an unidentified man who lost control of the vehicle as hurricane Katrina struck on the I-10 highway outside of Pensacola, Florida, August 29, 2005. Authorities in New Orleans ordered hundreds of thousands of residents to flee on Sunday as Hurricane Katrina strengthened into a rare top-ranked storm and barrelled towards the vulnerable U.S. Gulf Coast city for a second and more deadly assault on the Gulf Coast. REUTERS/Marc Serota