 During the Syrian Civil War, Turkish F-16s were tasked with airspace protection on the Syrian border.After the RF-4 downing in June 2012 Turkey changed its rules of engagements against Syrian aircraft, resulting in scrambles and downings of Syrian combat aircraft.On 16 September 2013, a Turkish Air Force F-16 shot down a Syrian Mi-17 helicopter that had violated Turkish airspace over Hatay province, with an AIM-9X Sidewinder missile.