 National Airlines began service there in 1934; it moved to St. Petersburg-Clearwater International Airport by the end of World War II.Decades later, National merged with Pan American World Airways (PanAm) to create one of the world's largest air carriers.In 1929, the Goodyear Tire and Rubber Company, at the request of St. Petersburg, agreed to base one of its famous airships (i.e., blimps) at Albert Whitted Airport.