Ключевые слова: 4 squadron, a23020, air combat, air force, aircrew, armed forces, aviator, combat aircraft, defence, defense, fac, faca, flight, fly, flying, forward air control, joint terminal attack controller, jtac, light attack, military, military aviation, officer, pc9, pc9a, pilatus, pilot, propeller, raaf, raaf base, raaf williamtown, reconnaissance, royal australian air force, single engine, target, targeting, turboprop, war, warplane, weapon,