FILE - In this Tuesday, Oct. 13, 2009 file picture, Perry deLapouyade waves an American flag as the USS New York travels down the Mississippi River through the Port of New Orleans in New Orleans, La. ... more 
FILE - In this Tuesday, Oct. 13, 2009 file picture, Perry deLapouyade waves an American flag as the USS New York travels down the Mississippi River through the Port of New Orleans in New Orleans, La. The ship was built with about eight tons of steel from the World Trade Center site and is on its way to New York its home port. Flowing naturally or overflowing menacingly, it is impossible to underestimate the Mississippi River's importance to the American economy and psyche. less 
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Associated Press | Photo By Bill Haber
Thu, May 19, 2011 3:03 PM EDT