A brass band performs in Jackson Square one day before the ten year anniversary of Hurricane Katrina in New Orleans, Louisiana, August 28, 2015. (Photo by Jonathan Bachman/Reuters)

A boy tap dances on a sidewalk in the French Quarter one day before the ten year anniversary of Hurricane Katrina in New Orleans, Louisiana, August 28, 2015. (Photo by Jonathan Bachman/Reuters)

A brass band performs in Jackson Square one day before the ten year anniversary of Hurricane Katrina in New Orleans, Louisiana, August 28, 2015. (Photo by Jonathan Bachman/Reuters)

A New Orleans Police Department officer passes by boys tap dancing in the French Quarter one day before the ten year anniversary of Hurricane Katrina in New Orleans, Louisiana, August 28, 2015. (Photo by Jonathan Bachman/Reuters)

Business owners tend to their shop on Bourbon Street one day before the ten year anniversary of Hurricane Katrina in New Orleans, Louisiana, August 28, 2015. (Photo by Jonathan Bachman/Reuters)

A man and his dog watch a brass band perform on Bourbon Street one day before the ten year anniversary of Hurricane Katrina in New Orleans, Louisiana, August 28, 2015. (Photo by Jonathan Bachman/Reuters)

Mary Kay, 2nd Queen of the Wild Tchoupitoulas Mardi grass Indian Tribe, raises her arms along the Industrial Canal levee in the Lower 9th Ward at a ceremony marking the 10th Anniversary of Hurricane Katrina, in New Orleans, Louisiana, August 29, 2015. (Photo by Edmund D. Fountain/Reuters)

Savannah Shange (facing camera) is comforted at the site where the Industrial Canal levee failed in 2005, flooding the Lower Ninth Ward, while she participates in a ceremony marking the tenth anniversary of Hurricane Katrina in New Orleans, Louisiana, August 29, 2015. (Photo by Edmund D. Fountain/Reuters)

Marchers, including Jennifer Jones (C) mark the tenth anniversary of Hurricane Katrina by taking part in a remembrance and second-line parade through the Lower 9th Ward in New Orleans, Louisiana, August 29, 2015. (Photo by Edmund D. Fountain/Reuters)

A woman marks the tenth anniversary of Hurricane Katrina by taking part in a remembrance and second-line parade down St. Claude Avenue in New Orleans, Louisiana August 29, 2015. (Photo by Edmund D. Fountain/Reuters)

Women pray at the site of the 2005 Industrial Canal levee failure, during a ceremony marking the tenth anniversary of Hurricane Katrina in the Lower 9th Ward in New Orleans, Louisiana August 29, 2015. (Photo by Edmund D. Fountain/Reuters)

The All For One brass band performs in a second-line parade marking the 10th anniversary of Hurricane Katrina on St. Claude Avenue in New Orleans, Louisiana August 29, 2015. (Photo by Edmund D. Fountain/Reuters)

A marcher in the African American Leadership Project's "Hands Around the Superdome" marches while carrying a sign comparing New Orleans Mayor Mitch Landrieu to Pinocchio, in New Orleans, Louisiana August 29, 2015. (Photo by Edmund D. Fountain/Reuters)

Participant Isis Watson listens during a moment of prayer during the African American Leadership Project's “Hands Around the Superdome” march and ceremony in New Orleans, Louisiana August 29, 2015. (Photo by Edmund D. Fountain/Reuters)

The Original Big 7 Junior Steppers parade through the Central Business District in a second line parade to mark the tenth anniversary of Hurricane Katrina in New Orleans, Louisiana August 29, 2015. (Photo by Edmund D. Fountain/Reuters)

The Original Big 7 Junior Steppers parade through the Central Business District in a second line parade to mark the tenth anniversary of Hurricane Katrina in New Orleans, Louisiana August 29, 2015. (Photo by Edmund D. Fountain/Reuters)

The Original Big 7 Junior Steppers parade past Charity Hospital, closed and vacant since Hurricane Katrina, in a second line parade to mark the tenth anniversary of the storm in New Orleans, Louisiana August 29, 2015. (Photo by Edmund D. Fountain/Reuters)

Phillip Clay dances in front of Charity Hospital, closed and vacant since Hurricane Katrina, during a second line parade to mark the tenth anniversary of the storm in New Orleans, Louisiana August 29, 2015. (Photo by Edmund D. Fountain/Reuters)

Members of the Creole Wild West Mardi Gras Indian Tribe parade past Charity Hospital, closed and vacant since Hurricane Katrina, in a second line parade to mark the tenth anniversary of the storm in New Orleans, Louisiana August 29, 2015. Creole Wild West is the oldest Mardi Gras Indian Tribe in the city. (Photo by Edmund D. Fountain/Reuters)

Horace Anderson, with the Creole Wild West Mardi Gras Indian Tribe, pauses in front of Charity Hospital, closed and vacant since Hurricane Katrina, in a second line parade to mark the tenth anniversary of the storm in New Orleans, Louisiana August 29, 2015. (Photo by Edmund D. Fountain/Reuters)

Survivors Tree Lyons (R) and Nell Lampkin (2nd R) laugh while posing at a celebration at the end of a second line parade which departed from the Lower Ninth Ward marking the 10th anniversary of Hurricane Katrina on August 29, 2015 in New Orleans, Louisiana. (Photo by Mario Tama/Getty Images)

Kids are dressed in Mardi Gras Indian costumes along the repaired levee wall in the Lower Ninth Ward on the 10th anniversary of Hurricane Katrina on August 29, 2015 in New Orleans, Louisiana. (Photo by Mario Tama/Getty Images)

People march through the Lower Ninth Ward during a second line parade on the 10th anniversary of Hurricane Katrina on August 29, 2015 in New Orleans, Louisiana. (Photo by Mario Tama/Getty Images)

People hold hands along the repaired levee wall in the Lower Ninth Ward during a ceremony marking the 10th anniversary of Hurricane Katrina on August 29, 2015 in New Orleans, Louisiana. (Photo by Mario Tama/Getty Images)

Revelers march in the Lower Ninth Ward during a second line parade marking the 10th anniversary of Hurricane Katrina on August 29, 2015 in New Orleans, Louisiana. (Photo by Mario Tama/Getty Images)

A performer from “Dazzling Lil Lady's” walks across a bridge crossing the Industrial Canal from the Lower Ninth Ward during a second line parade marking the 10th anniversary of Hurricane Katrina on August 29, 2015 in New Orleans, Louisiana. (Photo by Mario Tama/Getty Images)