The American base in the area of Kobani (Syrian Kurdistan). Satellite photos:

https://www.terraserver.com/view?utf8=%E2%9C%93&search_text=&searchLat=&searchLng=&lat=36.54&lng=38.58&bbox=&center=

(the link allows you to see how this place looked before the war) marked 3 helicopter and 2 of the heliplane. Base plays an important role in JSOC operations in Northern Syria. Of course, from the point of view of international law, its presence on the territory of Syria is illegal, but when has international law stopped anyone?