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Damaged railroad cars sit in Hurricane Isaac's flood waters on September 1, 2012 in Braithwaite, Louisiana. Louisiana residents continue to cope with the aftermath of Hurricane Isaac with ongoing flooding, destroyed property and many still without electricity. (Photo by Mario Tama/Getty Images)

Isaac's aftermath

September 4, 2012

Tens of thousands of customers remained in the dark on Sept. 3 in Louisiana and Mississippi, nearly a week after Isaac inundated the Gulf Coast with a deluge that still has some low-lying areas under water.