Delta Air Lines, Inc. provides scheduled air transportation for passengers and cargo in the United States and internationally. Its route network is centered around a system of hub and international gateway airports in Amsterdam, Atlanta, Cincinnati, Detroit, Memphis, Minneapolis-St. Paul, New York - LaGuardia, New York-JFK, Paris-Charles de Gaulle, Salt Lake City, Seattle and Tokyo-Narita. The company sells its tickets through various distribution channels, including telephone reservations, delta.com, global distribution systems, and online travel agencies. Its also provides aircraft maintenance, repair, and overhaul services for other aviation and airline customers, as well as offers staffing services, professional security and training services, and aviation solutions for third parties; vacation packages; and aircraft charters and aircraft management and programs. As of June 24, 2013, it had a fleet of approximately 700 aircraft. The company was founded in 1924 and is headquartered in Atlanta, Georgia.