Water surrounds homes in the devastated 9th Ward in this aerial view of damage from Hurricane Katrina in New Orleans on Aug. 30, 2005. (Mario Tama | Getty Images)Residents are rescued by helicopter from the floodwaters of Hurricane Katrina on Sept. 1, 2005 in New Orleans. As the city evacuated, already traumatized victims of Hurricane Katrina made a choice: Head for safety or stay behind with a beloved pet. (Vincent Laforet/Pool | AFP via Getty Images)Floodwaters from Hurricane Katrina fill the streets near downtown New Orleans, on Aug. 30, 2005. (Mario Tama | Getty Images)National Guard trucks haul residents through floodwaters to the Superdome after Hurricane Katrina hit in New Orleans on Aug. 30, 2005.