This file photo shows a Jefferson County sewer manhole cover in Railroad Park in Birmingham, Ala. Leaders of Alabama's most populous county voted to file an estimated $4.1 billion bankruptcy. Dave Martin/AP hide caption

itoggle caption Dave Martin/AP

April 30, 2011: In Tuscaloosa, Ala., LaTia Cobbs sat in the rubble of her destroyed home following the massive tornado that swept through the city three days earlier. Tom Pennington/Getty Images hide caption

itoggle caption Tom Pennington/Getty Images

Residents survey the destruction after a tornado hit Pratt City, Ala. just north of downtown Birmingham, Ala. on Wednesday, April 27, 2011. Butch Dill/AP hide caption

itoggle caption Butch Dill/AP