 During the Yemeni Civil War (2015-present), Houthis have used R-27T missiles modified to serve as surface-to-air missiles.A video released on 7 January 2018 also shows a modified R-27T hitting a Saudi F-15 on a forward-looking infrared camera.Houthi sources claim to have downed the F-15, although this has been disputed, as the missile apparently proximity detonated, though the F-15 continued to fly in its trajectory seemingly unaffected.