When most people see the word ‘diesel,’ they think of diesel trucks, but the truth is that diesel technicians have many more opportunities available to them. Diesel engines are also found in buses, trains, ships, farm and mining equipment, and even as the engine of choice to some drag racing teams. The expansion of diesel engines into other fields, such as aviation, is imminent, with diesel being not only the cheaper fuel in some places, but also a more efficient means of propulsion.