The Boeing Company, together with its subsidiaries, designs, develops, manufactures, sells, services, and supports commercial jetliners, military aircraft, satellites, missile defense, human space flight, and launch systems and services worldwide. It operates in five segments: Commercial Airplanes, Boeing Military Aircraft, Network & Space Systems, Global Services & Support, and Boeing Capital. The Commercial Airplanes segment develops, produces, and markets commercial jet aircraft for various passenger and cargo requirements; and provides related support services to the commercial airline industry. This segment also offers aviation services support, aircraft modifications, spare parts, training, maintenance documents, and technical advice to commercial and government customers. The Boeing Military Aircraft segment researches, develops, produces, and modifies manned and unmanned military aircraft, and weapons systems for global strike, vertical lift, and autonomous systems, as well as mobility, surveillance, and engagement. The Network & Space Systems segment researches, develops, produces, and modifies strategic defense and intelligence systems, satellite systems, and space exploration products. The Global Services & Support segment provides integrated logistics services comprising supply chain management and engineering support; maintenance, modification, and upgrades for aircraft; and training systems and government services that include pilot and maintenance training. The Boeing Capital segment offers financing services and manages financing exposure for a portfolio of equipment under operating and finance leases, notes and other receivables, assets held for sale or re-lease, and investments. The company was founded in 1916 and is headquartered in Chicago, Illinois.