The Air Corps' two CASA CN-235 maritime patrol aircraft are equipped with detection systems and assist the Naval Service in patrolling Ireland's territorial waters and exclusive economic zone. These aircraft are also used for high-altitude, low-opening parachuting by the Army's ARW. The corps has six AgustaWestland AW139 utility helicopters capable of being armed with FN MAG machine guns. These advanced helicopters can be flown using night-vision goggles and used in support of the ARW, Naval Service and Garda Síochána operations. Seven Pilatus PC-9 turboprop aircraft can be equipped with rocket pods and machine guns, and two Eurocopter EC135 light utility helicopters (which can be used as sniper platforms by the ARW) are used for training pilots and for air-ambulance missions.