Louisville, Kentucky river traffic between the upper Ohio River and the Gulf of Mexico, the settlement first grew as a portage site. It was the founding city of the Louisville and Nashville Railroad, which grew into a system across 13 states. Today, the city is known as the home of legendary boxer Muhammad Ali, the Kentucky Derby, Kentucky Fried Chicken (KFC), the University of Louisville and its Louisville Cardinals athletic teams, Louisville Slugger baseball bats, and three of Kentucky's six "Fortune" 500 companies. Its main airport is also the site of United Parcel Service's worldwide air hub. Since 2003, Louisville's borders have
Hillerich & Bradsby moved across the Ohio River, to Jeffersonville, Indiana, to take advantage of the railroad line there. In the 1990s, the company returned south to Louisville. Most of Hillerich and Bradsby's wood bats are made from Northern white ash grown in proprietary forests on the New York–Pennsylvania border. Ash trees in the United States are now under attack from the emerald ash borer, an invasive insect species native to Asia and first detected in Michigan in 2002. While H&B's forests are not yet infested by the beetle, the area being destroyed is growing and moving closer to them. The company is