When Hurricane Katrina burst through the levees in New Orleans 10 years ago, floodwaters instantly rendered thousands of homes uninhabitable.
At the peak of the housing crisis that followed, nearly 12,000 New Orleans residents were homeless. They lived on the streets and in ruined buildings.
Abbott Roland was one of them. After the storm, he was rescued by helicopter from his porch, slept in the Superdome with other flood victims and then moved for a time to Chattanooga, Tennessee.