In Washington, D.C., former Blackwater contractor Nicholas Slatten was found guilty of first-degree murder Wednesday for his role in the 2007 Nisoor Square massacre in central Baghdad. On September 16, 2007, Blackwater contractors killed 17 civilians after opening fire with machine guns and grenades on a crowded public space. Slatten was convicted of killing 19-year-old Ahmed Haithem Ahmed Al Rubia’y, an aspiring doctor. Slatten had previously been found guilty in 2014, but the verdict was thrown out on appeal least year. Three other Blackwater guards charged in the case are awaiting resentencing after their 30-year sentences were vacated.