the halcones was formed on january 14, 1981 as the "escuadilla de alta acrobacia "halcones,"" equipped with four pitts special aerobatic biplanes, although the team later increased to five aircraft. the air force acquired models s-2a and s-2s (the latter for the solo display). this agile biplane, which is american-made, is powered by a 200 hp lycoming engine. the s-2s is powered by a 260 hp engine.