The U.S.-led military coalition in Syria likely used a unique variant of the beloved Hellfire missile to kill a mercenary trainer who recently worked with an al Qaeda-affiliated militant group there, according to photos from the scene of the strike. The Syrian Observatory for Human Rights reported last week that a drone strike likely affiliated with the U.S.-led international military coalition in the country was responsible for killing Abu Yahya al-Uzbeki, an independent "military trainer" recently affiliated with the al Qaeda-linked Hurras Al-Din organization, while he was traveling in Syria's Idlib province. Photos of the aftermath of the strike on...