NEW ORLEANS, LA - AUGUST 28: A man walks through the flood waters near Lake Pontchartrain as Hurricane Isaac approaches on August 28, 2012 in New Orleans, Louisiana. Hurricane Isaac is expected to make landfall later today along the Lousiana coast. (Photo by Chris Graythen/Getty Images)

KILN, MS - AUGUST 28: Bridgette Mooney, her daughter Skyler, 15 months, and husband Kevin watch from their home as Hurricane Isaac lashes their property with rain on August 28, 2012 in Kiln, Mississippi. Many residents of the community, which suffered severe damage during Hurricane Katrina in 2005, decided to stay home and ride out the storm. (Photo by John Moore/Getty Images)

NEW ORLEANS, LA - AUGUST 28: A National Guard Humvee patrols in the French Quarter on August 28, 2012 in New Orleans, Louisiana. New Orleans is bracing as Hurricane Isaac, now a Category 1 storm, makes landfall. (Photo by Mario Tama/Getty Images)

Three men sit on a bench at the edge of Lake Pontchartrain as Hurricane Isaac approaches on August 28, 2012 in New Orleans, Louisiana. (Photo by Chris Graythen/Getty Images)

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A man crouches behind a sign to avoid the high winds on Lake Pontchartrain as Hurricane Isaac approaches on August 28, 2012 in New Orleans, Louisiana. (Photo by Chris Graythen/Getty Images)

Isaac, now a Category 1 hurricane, is expected to hit New Orleans late Tuesday or early Wednesday according to the National Hurricane Center. Credit: CNN
 

Isaac, now a Category 1 hurricane, is expected to hit New Orleans late Tuesday or early Wednesday according to the National Hurricane Center. Credit: CNN
 

Isaac, now a Category 1 hurricane, is expected to hit New Orleans late Tuesday or early Wednesday according to the National Hurricane Center. Credit: CNN
 

Isaac, now a Category 1 hurricane, is expected to hit New Orleans late Tuesday or early Wednesday according to the National Hurricane Center. Credit: CNN