Developed first as a training aircraft, the HF-12 quickly proved it's airworthyness as a light fighter, with a reduced radar cross section due to it's airframe and radar-absorbant coating, capable of carrying 4 short-range air-to-air missiles, a gatling cannon, and a probe for mid-air refueling, it became a cheap and easy to produce alternative to an obsolete airfleet, entering service in 2035 for the newly formed Central-South American Union of Republics (CSUR), being produced in Mexico and Brazil to defend the southern and central republics against a recently created fascist dictatorship in the north, after a corporate-backed coup d'etat in the United States, that immediately invaded it's neighbor, Canada, and pushed cruel sanctions on the EU, Britain and the Middle East.