Hurricane Isaac and its aftermath

Don Duplantier walks through his flooded home as water recedes from Hurricane Isaac in Braithwaite, La., Sunday, Sept. 2, 2012. In the foreground is a sign marking the waterline from Hurricane Katrina, but floodwater from Isaac went all the way up to the second floor.

About a quarter of a million customers remained in the dark in Louisiana and Mississippi on Monday, Sept. 3, 2012 - days after Isaac inundated the Gulf Coast with a deluge that still has some low-lying areas under water.

At least seven people were killed in the storm in the U.S. - five in Louisiana and two in Mississippi.

Credit: AP Photo/Gerald Herbert

A boat overturned by Hurricane Isaac floats in lower Plaquemines Parish on September 2, 2012 in Buras, Louisiana. Today was the first day some residents of lower Plaquemines were allowed to return to assess damage to their homes.

Credit: Mario Tama/Getty Images

Don Duplantier walks through his flooded home as water recedes from Hurricane Isaac in Braithwaite, La., on Sept. 2, 2012. In the foreground is a sign marking the waterline from Hurricane Katrina, but floodwater from Isaac went all the way to the second floor. More than 200,000 people across Louisiana still didn't have any power five days after Hurricane Isaac ravaged the state. Thousands of evacuees remained at shelters or bunked with friends or relatives.

Credit: AP Photo/Gerald Herbert

Don Duplantier walks through his flooded home as water recedes from Hurricane Isaac in Braithwaite, La., on Sept. 2, 2012.

Credit: AP Photo/Gerald Herbert

A building and camper are inundated in floodwaters from Hurricane Isaac in Braithwaite, La., on Sept. 2, 2012.

Credit: AP Photo/Gerald Herbert

Floodwaters from Hurricane Isaac inundate structures in Scaresdale , La., on Sept. 2, 2012. Thousands of evacuees remained at shelters or bunked with friends or relatives.

Credit: AP Photo/Gerald Herbert

People stand amidst receding floodwaters from Hurricane Isaac in Scaresdale , La., on Sept. 2, 2012. More than 200,000 people across Louisiana still didn't have any power five days after Hurricane Isaac ravaged the state.

Credit: AP Photo/Gerald Herbert

A dead cow and dead horse, right, that were trapped in floodwaters from Hurricane Isaac, lie in floodwaters in Plaquemines Parish, La., on Sept. 2, 2012. More than 200,000 people across Louisiana still didn't have any power five days after Hurricane Isaac ravaged the state. Thousands of evacuees remained at shelters or bunked with friends or relatives.

Credit: AP Photo/Gerald Herbert

A cyclist holds an umbrella as he rides through the Purdue University campus in West Lafayette, Ind. as the remnants of Hurricane Isaac's rain falls on Sept. 2, 2012.

Credit: Brent Drinkut,AP Photo/The Journal & Courier

Dogs await transport from the Jefferson Parish Animal Shelter on September 1, 2012 on the outskirts of New Orleans, Louisiana. The animal shelter has been receiving a large number of dogs and cats who's owners' homes were damaged or destroyed by Hurricane Isaac. The Humane Society of the United States is transferring 150 dogs and cats from the shelter to other locations in the U.S., anticipating that more pets rescued from flood affected areas will be arriving in upcoming days.

Credit: John Moore/Getty Images

A cat awaits a medical exam before being transported from the Jefferson Parish Animal Shelter on September 1, 2012 on the outskirts of New Orleans, Louisiana. The animal shelter has been receiving a large number of dogs and cats who's owners' homes were damaged or destroyed by Hurricane Isaac. The Humane Society of the United States is transferring 150 dogs and cats from the shelter to other locations in the U.S., anticipating that more pets rescued from flood affected areas will be arriving in upcoming days.

Credit: John Moore/Getty Images

A dead dog floats in receding floodwaters from Hurricane Isaac in Braithwaite, La., Sept. 2, 2012.

Credit: AP Photo/Gerald Herbert

This Sept. 1, 2012 photo provided by the Louisiana Joint Information Center shows flooding in LaPlace, La. Louisiana State Police say Interstate 10, foreground, is open to traffic in both directions between New Orleans and Baton Rouge. Police spokesman Capt. Doug Cain said the highway was fully reopened just before 12 p.m. CDT Saturday. But he said police dispatchers continue to be swamped with calls about the status of the highway in the wake of Hurricane Isaac.

Credit: AP Photo/Louisiana Joint Information Center

Danny Ruiz, of Violet, La., waits for a tow to pull out his brother's sunken boat trailer, after the area was flooded from Hurricane Isaac, in Braithwaite, La., Sept. 1, 2012. Louisiana's Public Service Commission said more than 443,000 customers remained without electricity around Louisiana on Saturday morning, days after Hurricane Isaac crept across the state.

Credit: AP Photo/Gerald Herbert

Traffic makes their way through a flooded portion of U.S. 52 after heavy rains from the remnants of Hurricane Isaac came through the area on Sept. 1, 2012, in Lafayette, Ind.

Credit: AP Photo/Journal & Courier/Michael Heinz

Angela Serpas cries as she sees her flooded home for the first time since Hurricane Isaac pushed a 10-foot storm surge into Braithwaite, La., Sept. 1, 2012. At right is her daughter Lainy Serpas, 11. While New Orleans streets were bustling again and workers were returning to offshore oil rigs, thousands of evacuees couldn't return home to flooded low-lying areas of Louisiana and more than 400,000 sweltering electricity customers in the state remained without power.

Credit: AP Photo/Gerald Herbert

Volunteers for Convoy of Hope distribute relief supplies to residents after flooding from Hurricane Isaac, in Slidell, La., Sept. 1, 2012.

Credit: Gerald Herbert

A boat motors through floodwaters from Hurricane Isaac in Braithwaite, La., Sept. 1, 2012. While New Orleans streets were bustling again and workers were returning to offshore oil rigs, thousands of evacuees couldn't return home to flooded low-lying areas of Louisiana and more than 400,000 sweltering electricity customers in the state remained without power.

Credit: AP Photo/Gerald Herbert

Deron Dumes, left, and his uncle Greg Dumes remove damaged item from their flood damaged home in the aftermath of Hurricane Isaac in LaPlace, La., Sept. 1, 2012. Floodwaters cover many streets and power remains out in some areas.

Credit: AP Photo/David J. Phillip

Tony Rodriguez, right, carries his baby daughter Nicole as they and his wife Jodi Clelland leave their flooded home in the aftermath of Hurricane Isaac in Slidell, La., Friday, Aug. 31, 2012.

Isaac sloshed northwards into the nation's midsection Friday after dumping as much as 18 inches of rain in some areas, flooding stretches of the Gulf Coast and knocking out power to more than a million customers in Louisiana, Mississippi and Arkansas. Entire neighborhoods were water-logged and left without lights, air conditioning or clean water.

At least five deaths in La. and Miss., have been blamed on the storm.

After being downgraded to a tropical depression, the storm's center was on track to cross Arkansas on Friday and southern Missouri on Friday night, spreading more rain as it goes.

Credit: AP Photo/David J. Phillip

A satellite image of Hurricane Isaac taken at 1:57 a.m. early on August 29, 2012. The Visible Infrared Imaging Radiometer Suite on the Suomi-NPP satellite captured this nighttime view of the storm and of cities along the Gulf Coast of the United States, with the clouds of Isaac lit by moonlight.

Credit: NASA

Tyler Brown wades through the floodwaters from Magee's Creek at a relative's house in Tylertown, Miss., on Thursday, Aug. 30, 2012. Isaac blew ashore as a hurricane Tuesday night, soaking southern Louisiana and Mississippi. It was downgraded to a tropical storm Wednesday and to a tropical depression Thursday. High winds damaged buildings Thursday in Ocean Springs and Pascagoula.

Credit: AP Photo/The Enterprise-Journal, Matt Williamson

Homes in LaPlace, La., west of US 51 and south of I-10, are surrounded by floodwater in the aftermath of Isaac on Thursday, Aug. 30, 2012. Isaac hovered over Louisiana for a third day Thursday, shedding more than a foot of additional rain that forced authorities to hurriedly evacuate areas ahead of the storm and rescue hundreds of people who could not escape as the rapidly rising waters swallowed entire neighborhoods.

Credit: AP Photo/The Times-Picayune, Michael Democker

An intentional levy breach that was created to alleviate trapped floodwater is seen in the community of Braithwaite, La., in the aftermath of Hurricane Isaac, Thursday, Aug. 30, 2012.

Credit: AP Photo/Gerald Herbert

Flooding from an over-topped levee inundated the community of Braithwaite, La. with floodwaters from Hurricane Isaac Thursday, August 30, 2012. The levee break in the foreground was cut to relieve the flooding. Isaac soaked Louisiana for yet another day and pushed more water into neighborhoods all around the city, flooding homes and forcing last-minute evacuations and rescues. New Orleans itself was spared, thanks in large part to a levee system built after Katrina.

Credit: AP Photo/The Times-Picayune, John McCusker

Property remains submerged by flood waters brought by Hurricane Isaac, August 30, 2012 in Manchac, La. Hundreds of thousands of Louisianans remain without power.

Credit: John Moore/Getty Images

Brittany Trumbaturi prepares to leave her flooded home with family member Joshua Barbot (rear) who came to rescue family members in a boat on August 30, 2012 in Slidell, Louisiana. The large Category 1 hurricane had slowly moved across southeast Louisiana, dumping huge amounts of rain and knocking out power to Louisianans in scattered parts of the state. The weather system has now been downgraded to a tropical storm but is still producing heavy rains and flooding as it moves north.

Credit: Mario Tama/Getty Images

Isaac Fields, left, and Victor Jones use street signs to paddle a boat out of their flooded neighbor, Thursday, Aug. 30, 2012, in LaPlace, La.

Credit: AP Photo/Eric Gay

Lotta Moore hands her belongings to policemen helping evacuate residents who chose to be evacuated from their flooded neighborhood in Slidell, northeast of New Orleans on August 30, 2012 in La.

Credit: FREDERIC J. BROWN/AFP/GettyImages

Residents of Waveland, Miss., wade through storm water left by Isaac's unceasing rainstorms, Thursday, Aug. 30, 2012. Residents of the storm-saturated Mississippi Gulf Coast ventured out Thursday to examine damage from Isaac as local governments lifted curfews. Some neighborhoods flooded as the tropical storm continued dumping heavy rains on its slow trek northward. Some coastal businesses and roads reopened, but many people who had evacuated still couldn't make it home because of standing water in low-lying areas and along rivers.

Credit: AP Photo/Rogelio V. Solis

Interstate 10 in LaPLace, La. at the approach of the Twelve Mile Bridge is underwater because of Hurricane Isaac Thursday, August 30, 2012. Isaac soaked Louisiana for yet another day and pushed more water into neighborhoods all around the city, flooding homes and forcing last-minute evacuations and rescues. New Orleans itself was spared, thanks in large part to a levee system built after Katrina.

Credit: AP Photo/The Times-Picayune, John McCusker

Residents survey flood damage in Lafitte, La., on Thursday,, Aug. 30, 2012, a day after Hurricane Isaac hit the area near New Orleans.

Credit: AP Photo/Erik Schelzig

A Bay St. Louis, Miss., resident rides through sea debris deposited by Hurricane Isaac along the walking path on the beach, Thursday, Aug. 30, 2012. The destruction has drawn a constant crowd of sightseers to the beach.

Credit: AP Photo/Rogelio V. Solis

Flood evacuee Deborah Watson, 55, is taken from a flood shelter in a high school gym after falling sick on August 30, 2012 in Kentwood, Louisiana. Local residents evacuated to the shelter after officials announced that a dam upstream in Mississippi was in danger of bursting due to rains from Hurricane Isaac. Tens of thousands of people along the Tangipahoain River were asked to evacuate the area due to the high flood risk.

Credit: John Moore/Getty Images

Cows are stranded in floodwater after Isaac came through the region, in Plaquemines Parish, La., Thursday, Aug. 30, 2012. Isaac staggered toward central Louisiana early Thursday, its weakening winds still potent enough to drive storm surge into portions of the coast and the River Parishes between New Orleans and Baton Rouge.

Credit: AP Photo/Gerald Herbert

Homes are flooded as Hurricane Isaac hits, Aug. 29, 2012, in Braithwaite, La. Isaac was packing 80 mph winds, making it a Category 1 hurricane. It came ashore early Aug. 28, near the mouth of the Mississippi River, driving a wall of water nearly 11 feet high inland and soaking a neck of land that stretches into the Gulf. The storm stalled for several hours before resuming a slow trek inland, and forecasters said that was in keeping with the its erratic history.

Credit: AP Photo/David J. Phillip

A flooded home in Plaquemines Parish, La., is seen Aug. 29, 2012. Residents say a post-Katrina flood wall is responsible for inundating their homes and everything to the south for many miles. A local law enforcement source tells CBS News had the gates been kept open most of Saint Bernard Parish would be under water.

Credit: August Skamenca

What appear to be whooping cranes take refuge along the Mississippi River beside a levee, Aug. 29. 2012. Opposite the birds on the other side of the levee, the entire community of Braithwaite, La., was inundated with more than 12 feet of water from Hurricane Isaac.

Credit: August Skamenca

LALeroy, Lisa and Christopher Smith wave down a boat after being stranded by the rising water during Hurricane Isaac in the River Forest Subdivision on Aug. 29, 2012, in LaPlace, La.

Credit: Chris Graythen/Getty Images

A streetlight dangles over Louisiana Highway 56 as utility polls knocked askew by Hurricane Isaac lean over the roadway, Aug. 29, 2012.

Credit: AP Photo/Kevin McGill

A car sits submerged in the flood waters of Hurricane Isaac in the River Forest subdivision on Aug. 29, 2012, in LaPlace, La.

Credit: Chris Graythen/Getty Images

A felled tree from Hurricane Isaac is seen in downtown New Orleans, Aug. 29, 2012.

Credit: August Skamenca

Rain from Hurricane Isaac falls over Bourbon Street on Aug. 29, 2012, in New Orleans, La.

Credit: John Moore/Getty Images

Errol Ragas walks past a flooded cemetery while recovering dry blankets from his home on Aug. 29, 2012, in Oakville, Plaquemines Parish, La.

Credit: John Moore/Getty Images

A church is flooded as Hurricane Isaac hits, Aug. 29, 2012, in Braithwaite, La.

Credit: AP Photo/David J. Phillip

People gather beneath an awning at an impromptu cookout at a bar that lost electricity during Hurricane Isaac on Aug. 29, 2012, in New Orleans, La.

Credit: Mario Tama/Getty Images

Isaac's winds and storm surge overcomes the seawall and floods Terrace Avenue in Waveland, Miss., Aug. 29, 2012.

Credit: AP Photo/Rogelio V. Solis

A downed streetlight lies in the rain from Hurricane Isaac in the Central Business District on August 29, 2012 in New Orleans.

Credit: Mario Tama/Getty Images

Research students from the the University of Alabama measure wind speeds as Hurricane Isaac makes landfall, Aug. 29, 2012, in New Orleans, La.

Credit: AP Photo/Eric Gay

John Taylor loads a cart with ice for a customer on Aug. 28, 2012, in Chalmette, La.

Credit: AP Photo/David J. Phillip

A street sign lies near floodwaters during Hurricane Isaac on Aug. 29, 2012, in Braithwaite, La.

Credit: Mario Tama/Getty Images

A tree toppled by Hurricane Isaac stretches across the roof of a food stand on Aug. 29, 2012, in Arabi, La.

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Rescue workers transport residents trapped by rising water from Hurricane Isaac in the River Forest subdivision on Aug. 29, 2012, in LaPlace, La.

Credit: Chris Graythen/Getty Images

A tree lies on a car on Poydras St. downtown after Hurricane Isaac made landfall in New Orleans, Aug. 29, 2012.

Credit: AP Photo/Gerald Herbert

A tree is blown over outside Tulane Medical Center during the rains from Hurricane Isaac on Aug. 29, 2012, in New Orleans.

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Rescue workers transport residents trapped by rising water from Hurricane Isaac in the River Forest subdivision on Aug. 29, 2012, in LaPlace, La.

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Christopher Smith rides in a boat after being rescued from the rising flood water from Hurricane Isaac in the River Forest subdivision on August 29, 2012 in LaPlace, La.

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Rescue workers transport residents trapped by rising water from Hurricane Isaac in the River Forest subdivision on Aug. 29, 2012, in LaPlace, La.

Credit: Chris Graythen/Getty Images

A torn up billboard is seen on a deserted Tulane Ave. after Hurricane Isaac made landfall in New Orleans, Aug. 29, 2012.

Credit: AP Photo/Gerald Herbert

A man crosses Canal Street in the wind and rain from Hurricane Isaac, Aug. 29, 2012, in New Orleans.

Credit: AP Photo/David J. Phillip

The St. Stanislaus pier alongside the Beach Boulevard seawall in Bay St. Louis, Miss., is hit by Isaac's winds and storm surges that are flooding some low laying neighborhoods, Aug. 29, 2012.

Credit: AP Photo/Rogelio V. Solis

A man struggles with his rain cover as he walks up Bourbon Street in the French Quarter as Hurricane Isaac makes landfall, Aug. 29, 2012, in New Orleans.

Credit: AP Photo/Eric Gay

A man carries his shoes in New Orleans as Hurricane Isaac pounds the city Aug. 29, 2012.

Credit: CBS

An uprooted tree lies across Poydras St. downtown after Hurricane Isaac made landfall in New Orleans, Aug. 29, 2012.

Credit: AP Photo/Gerald Herbert

Sand bags block the entrance to a Wells Fargo bank in Mobile, Ala., on Aug. 29, 2012. Hurricane Isaac has dumped more than five inches of rain on the Alabama coast and knocked out power to some residents, but it hasn't interrupted the everyday life of others. Residents of Dauphin Island lost power, but they also escaped the worst of Isaac. The weather service reports wind gusts of 47 mph.

Credit: AP Photo/Butch Dill

A tree lies on a car on Poydras St. downtown after Hurricane Isaac made landfall in New Orleans, Aug. 29, 2012.

Credit: AP Photo/Gerald Herbert

A parking attendant both is overturned on Poydras St. downtown after Hurricane Isaac made landfall in New Orleans, Aug. 29, 2012.

Credit: AP Photo/Gerald Herbert

Isaac's rain and winds buffeted the streets of Waveland, Miss., Aug. 29, 2012.

Credit: AP Photo/Rogelio V. Solis

Heavy rain from Hurricane Isaac obscures the view of the Crescent City Connection Bridge over the Mississippi River early on Aug. 29, 2012, in New Orleans. The large Level 1 hurricane slowly moved across southeast Louisiana, dumping huge amounts of rain and knocking out power to Louisianans in scattered parts of the state.

Credit: John Moore/Getty Images

Ronnie Willis makes his way across Canal Street through the wind and rain from Hurricane Isaac, Aug. 29, 2012, in New Orleans.

Credit: AP Photo/David J. Phillip

Terry Dickson walks through the streets of the Lower Ninth Ward as Hurricane Isaac moves closer, Aug. 28, 2012, in New Orleans.

Credit: AP Photo/David J. Phillip

Waveland public works employee Darryl Antoine looks over his cousin's house near the beach in Waveland, Miss., as Isaac's rain and winds flood the street, Aug. 29, 2012.

Credit: AP Photo/Rogelio V. Solis

Utility trucks line the streets waiting to move out to damaged areas in Mobile, Ala. on Aug. 29, 2012.

Credit: AP Photo/Butch Dill

A man removes sand bags from the entrance to an office as he arrived to work in Mobile, Ala., on Aug. 29, 2012.

Credit: AP Photo/Butch Dill

Isaac's winds and storm surge overcomes the seawall and floods Beach Boulevard in Waveland, Miss., Aug. 29, 2012.

Credit: AP Photo/Rogelio V. Solis

Adams Street near the State Docks in Mobile, Ala. is flooded on Aug. 29, 2012.

Credit: AP Photo/Butch Dill

Utility trucks are staged in a parking lot ready to respond in Mobile on Aug. 29, 2012.

Credit: AP Photo/Butch Dill

A man sits on the seawall as his friends walk in the storm surge from Isaac, on Lakeshore Drive along Lake Pontchartrain, as the storm approaches landfall, in New Orleans, Aug. 28, 2012.

Credit: AP Photo/Gerald Herbert

Joshua Keegan and his dog Scout swim in the rising water of Lake Pontchartrain as Hurricane Isaac approaches, Aug. 28, 2012, in New Orleans, La.

Credit: Getty Images

Matthew Nicaud braves the wind as waves crash over the seawall of Lake Pontchartrain at Canal Boulevard in New Orleans, Aug. 28, 2012, as Isaac approaches.

Credit: AP Photo/The Times-Picayune, John McCusker

Louisiana National Guard Troops prepare for Hurricane Isaac outside the Superdome in New Orleans, where many residents took refuge during Hurricane Katrina seven years ago, Aug. 28, 2012.

Credit: August Skamenca

Louisiana National Guard Troops prepare for Hurricane Isaac on Canal Street in New Orleans, Aug. 28, 2012.

Credit: August Skamenca

The Lower Ninth Ward district of New Orleans is seen as Hurricane Isaac approaches, Aug. 28, 2012.

Credit: August Skamenca

A swelling inlet of the Mississippi River is seen along a levee that protects New Orleans' Lower Ninth Ward, as Hurricane Isaac approaches, Aug. 28, 2012.

Credit: August Skamenca

A Plaquemines Parish vehicle rides through rising floodwater behind the levee as Isaac approaches, which is expected to make landfall in the region as a hurricane this evening in Venice, La., the southernmost tip of Louisiana, Aug. 28, 2012.

Credit: AP Photo/Gerald Herbert

U.S. Senator David Vitter, R- La., left, Jefferson Parish President John Young, second left, Louisiana Gov. Bobby Jindal and Army Corps of Engineers Col. Ed Fleming, right, talk as they tour the new levee wall and pumps at the 17th Street Canal in New Orleans, built after Hurricane Katrina, as Hurricane Isaac approaches New Orleans, Aug. 28, 2012.

Credit: AP Photo/The Times-Picayune

Pedestrians make their way down Bourbon Street as rain from Hurricane Isaac falls in the French Quarter, Aug. 28, 2012, in New Orleans.

Credit: AP Photo/David J. Phillip

A sign in the French Quarter asks shoppers to return another day ahead of Tropical Storm Isaac on Aug. 27, 2012, in New Orleans.

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Andrew Theriot flies a kite down Bourbon Street in the French Quarter as rain from Hurricane Isaac falls, Aug. 28, 2012, in New Orleans.

Credit: AP Photo/David J. Phillip

The Lower Ninth Ward district of New Orleans is seen as Hurricane Isaac approaches, Aug. 28, 2012. Seven years after Hurricane Katrina, residents of the Lower Ninth describe it as looking like a "jungle," and feel forgotten.

Credit: August Skamenca

Parnell Latham, who refused to obey a mandatory evacuation order in order to protect his storage pods, stands on his property in Plaquemines Parish, La., in anticipation of Isaac, which is expected to make landfall in the region as a hurricane, Aug. 28, 2012.

Credit: AP Photo/Gerald Herbert

Greg Washington makes his way home in the Lower Ninth Ward through the wind and rain from Hurricane Isaac, Aug. 28, 2012, in New Orleans.

Credit: AP Photo/David J. Phillip

A torn up billboard is seen on a deserted Tulane Ave. after Hurricane Isaac made landfall in New Orleans, Aug. 29, 2012.

Credit: AP Photo/Gerald Herbert

John Taylor carries a piece of plywood to board up store windows, Aug. 28, 2012, in Chalemette, La.

Credit: AP Photo/David J. Phillip

Kevin Johnson clears debris for a client in the French Quarter in preparation for Hurricane Isaac, Aug. 28, 2012, in New Orleans, Louisiana.

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Louisiana National Guard Troops prepare for Hurricane Isaac outside the New Orleans convention center, Aug. 28, 2012.

Credit: August Skamenca

The Lower Ninth Ward district of New Orleans is seen as Hurricane Isaac approaches, Aug. 28, 2012.

Credit: August Skamenca

Cary Hogan sits on his houseboat on Bayou Gauche west of New Orleans, as he awaits the arrival of Isaac, Aug. 28, 2012.

Credit: AP Photo/The Times-Picayune

Cary Hogan sits on the deck of his houseboat on Bayou Gauche west of New Orleans, as he awaits the arrival of Isaac, Aug. 28, 2012.

Credit: AP Photo/The Times-Picayune, Brett Duke

Tommy Leonard, of Port Sulphur, La.., says goodbye to his dog 'Snuggles,' before he hands him over to animal control officers, who are keeping evacuees pets for them, at an evacuation shelter in Belle Chasse, La., due to the impending landfall of Isaac, which is expected reach the region as a hurricane , Aug. 28, 2012.

Credit: AP Photo/Gerald Herbert

George Julien rests after shopping in a boarded-up store that remained open on Canal Street in New Orleans Aug. 28, 2012, as Hurricane Isaac beared down on the city.

Credit: Getty Images

Onlookers watch Lake Pontachartrain, where restaurants were destroyed by Hurricane Katrina, as Isaac heads toward New Orleans, Aug. 28, 2012.

Credit: AP Photo/The Times-Picayune

Bertrand Ragan holds his dog Max while being checked into the hurricane shelter at the Belle Chasse Auditorium on Aug. 27, 2012, in Belle Chasse, La.

Credit: Chris Graythen/Getty Images

Plaquemines Parish animal control picks up a dog at the hurricane shelter at the Belle Chasse Auditorium on Aug. 27, 2012, in Belle Chasse, La.

Credit: Chris Graythen/Getty Images

Drug Enforcement Agency Special Agent Keith Billiot, left, Lanny LaFrance, center, and Sam Maltese, right, battle the wind and rain from Hurricane Isaac while riding in a rescue boat, Aug. 29, 2012, in Braithwaite, La.

Credit: AP Photo/David J. Phillip

Workers place plywood on the windows of the Royal Sonesta Hotel on Bourbon St. to prepare for Tropical Storm Isaac on Aug. 27, 2012, in New Orleans.

Credit: Chris Graythen/Getty Images

A sign in the French Quarter making fun of Tropical Storm Isaac on Aug. 27, 2012, in New Orleans.

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A sign in the French Quarter making fun of Tropical Storm Isaac on Aug. 27, 2012, in New Orleans.

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Bourbon street remains vitrually empty ahead of Tropical Storm Isaac on Aug. 27, 2012, in New Orleans.

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A worker attaches plywood to the window of his shop ahead of Tropical Storm Isaac on Aug. 27, 2012, in New Orleans.

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People ride bicycles down a virtually empty Bourbon street ahead of Tropical Storm Isaac on Aug. 27, 2012, in New Orleans.

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Workers place plywood on the windows of the Royal Sonesta Hotel on Bourbon St. to prepare for Tropical Storm Isaac on Aug. 27, 2012, in New Orleans.

Credit: Chris Graythen/Getty Images

A sign in the French Quarter invites people in ahead of Tropical Storm Isaac on Aug. 27, 2012, in New Orleans.

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Workers place plywood on the windows of the Royal Sonesta Hotel on Bourbon St. to prepare for Tropical Storm Isaac on Aug. 27, 2012, in New Orleans.

Credit: Chris Graythen/Getty Images

Sandbags protect a storefront on Canal Street in preparation for Hurricane Isaac, Aug. 28, 2012 in New Orleans, La.

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