ByThomas Frank, USA TODAY September 16, 2009, 9:15 PM WILLIAMSBURG, Ky. — One of the USA’s newest airports has a 5,500-foot lighted runway, a Colonial-style terminal with white columns, and hundreds of acres for growth. But Kentucky’s Williamsburg-Whitley County Airport lacks one feature: airline passengers. Built using $11 million in federal money, the airport is used