Embraer SA, formerly Embraer - Empresa Brasileira de Aeronautica SA, is a Brazil-based holding company primarily engaged in the manufacture of aircrafts. The Company divides its operations into three main segments: Commercial Aviation; Defense and Security, and Executive Aviation. The Commercial Aviation segment is involved in the development, production and sale of commercial jets, as well as in the provision of support services, with emphasis on the regional aviation industry and aircraft leasing. The Defense and Security segment mainly includes the research, development, production and modification of defense aircrafts. Through the Executive Aviation segment, the Company is active in the development, production and sale of business jets, provision of support services related to this sector of the market and aircraft leasing. The Company has subsidiaries, affiliated companies and representative offices in Brazil, the United States, France, Spain, Portugal, China and Singapore.