In flooded New Orleans, stranded people remain in buildings, on roofs, in the backs of trucks or gathered in large groups on higher ground.
Violence disrupts relief efforts as authorities rescue trapped residents and try to evacuate thousands of others living among corpses and human waste. Those stranded express growing frustration with the disorder evident on the streets, raising questions about the coordination and timeliness of relief efforts.
Homeland Security Secretary Michael Chertoff announces that 4,200 National Guard troops trained as military police will be deployed to New Orleans over the next three days. Louisiana Gov. Kathleen Blanco requests the mobilization of 40,000 National Guard troops.
Gasoline prices spike as high as $5 a gallon in some areas as consumers fearing a gas shortage race to the pumps.