...[It] is hard to imagine the carnage that erupted here in Nisoor Square in September 2007, when Blackwater Worldwide security guards killed at least 17 Iraqis in a hail of machine-gun bullets and grenades... Five Blackwater employees, all of them U.S. military veterans, were charged Monday with manslaughter and attempted manslaughter... The current Blackwater defendants...could face decades in prison in the United States if convicted, something that pleases Iraqis such as Ali Abdul Ali.