FILE - A Six Flags theme park is inundated by floodwater in the aftermath of Hurricane Katrina in New Orleans, Sept. 11, 2005. (AP Photo/David J. Phillip, Pool, File)

FILE - Rides stand at the Six Flags of New Orleans site in an Aug. 18, 2009. (Chris Granger )/The Times-Picayune/The New Orleans Advocate via AP)

FILE - A Six Flags theme park lies abandoned in New Orleans, Aug. 27, 2013. (AP Photo/Gerald Herbert, File)