A U.S. Navy fighter jet shot down a Syrian government Su-22 fighter jet on June 18 that had dropped bombs on Syrian rebel forces fighting the Islamic State in Syria, ABC News reported. The U.S.-led coalition said in a statement that its focus is on fighting the militant group, and not fighting the Syrian government or Russian forces, but it will defend coalition forces coming under attack. The incident occurred in a town south of Tabqa, Syria, which had been retaken from the Islamic State by the Syrian Democratic Forces, an umbrella group of Syrian Kurdish and Arab rebel forces, in preparation for the offensive on the stronghold of Raqqa. The downing is the latest escalation between the U.S.-led coalition and pro-government forces in Syria. The United States has also recently conducted airstrikes at pro-Syrian government forces that have moved into a deconfliction zone around the town of at al-Tanf in southwest Syria, which is the location of a coalition training base for local forces fighting the Islamic State.