The view of airplanes next to unidentified buildings at the Trans World Airlines (TWA) terminal in an unnamed airport in Boulder City, Nevada. One of America's oldest International Air Carriers (INAC) that was popular during the twentieth century, the Trans World Airlines was aided by aviator Charles Lindbergh in mapping out the company's early air routes, and so in the 1930s Trans World Airlines was also known as "The Lindbergh Line."