Embraer SA engages in the design, manufacture, and sale of aircraft and its parts for commercial, defense, and executive aviation sectors. The company is headquartered in Sao Jose Dos Campos, Sao Paulo and currently employs 18,873 full-time employees. The company went IPO on 2006-05-23. The firm produces aircraft for commercial and executive aviation, as well as for defense and security purposes and related services. Its segments include Commercial aviation business, which involves the development, production and sale of commercial jets, and rendering of support services, particularly in the regional aviation segment and aircraft leases; Executive Jet business, which markets its executive jets to companies, including fractional ownership companies, charter and air-taxi companies, high-net-worth individuals and to flight academies; Defense and Security Business segment, which conceives, designs, develops, manufactures and supports a range of integrated solutions for the defense and security market; and Other Related Businesses segment, which provides fuel systems, structural parts, and mechanical and hydraulic systems to Sikorsky Aircraft Corporation for its production of helicopters.