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Photo: An American Opera Just over four years ago, Hurricane Katrina hit Louisiana and left a path of devastation. The displacement of families was one tragedy, while the staggering number of abandoned pets was another. "An American Opera: The Greatest Pet Rescue Ever" is the story of what happened to those animals when everyone fled. But don't worry -- there are smiles among the tears. Paw Nation chatted with director Tom McPhee, who filled us in on his motivations, the biggest challenges he faced in making his multi-award winning film, and which part of the documentary still makes the hairs on the back of his neck stand up. McPhee didn't originally go down to Louisiana for the ...