Embraer SA, based in São Paulo, Brazil, manufactures regional aircraft, commercial jets, and defense and security products. The company also offers a range of services to support its hardware installed base. Its defense and security activities are currently focused on the development of KC-390 military transport aircraft. The company also produces structural aircraft systems and components. It operates in the following segments: commercial aviation, defense and security, business jets, service and support. The company generates the highest revenue in the Commercial Aviation segment.