The company's structure is concentrated in two business areas of almost the same size: aircraft and trains. In the aviation field, Bombardier is a leader in manufacturing regional aircraft, business jets and amphibious aircraft. It also provides some ownership plans and charter services for business jets, and provides technical support, maintenance and pilot training for the business jet and regional aircraft market and military field. In the field of railway transportation, Bombardier is a leader in the manufacture and service of railway vehicles. Its broad product range includes railway passenger cars and transportation systems, as well as locomotives, freight cars, traction systems and railway signal and control solutions. Bombardier also provides a wide range of services, including vehicle and fleet maintenance, equipment and logistics, as well as vehicle or component renovation, engineering reengineering and overhaul.