Isaac could test New Orleans’s $14-billion new levees - Decoder (1:48) 

If hurricane Isaac hits New Orleans, it will challenge the labyrinth of reinforced walls and flood control systems surrounding the city. The Army Corps of Engineers closed the massive Lake Borgne Surge Barrier for the first time and is expected to close others. A look at the Crescent City’s new and very expensive line of defense. (August 28, 2012)Produced, written and edited by David J. Fazekas

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