Associated Press
In this April 28, 2012 photo, passengers on the American Queen steamboat eat in the dining room as the vessel moves up the Mississippi River on the Mississippi River in northwest Tennessee. The American Queen is the largest steamboat in the world, carrying 436 passengers. The 418-foot-long vessel is taking tourists on long-distance trips on the Mississippi for the first time since 2008, when its previous owner ceased operations.  (AP Photo/Adrian Sainz)

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