Generate a context and a hypothesis.
Context: The FMA IA 58 Pucará (Quechua: "Fortress" ) is an Argentine ground-attack and counter-insurgency (COIN) aircraft manufactured by the Fábrica Militar de Aviones. It is a low-wing twin-turboprop all-metal monoplane with retractable landing gear, capable of operating from unprepared strips when operationally required. The type saw action during the Falklands War and the Sri Lankan Civil War.

Hypothesis: The acronym COIN means counter insurgent