In a significant blow to the Justice Department, a federal judge on Thursday threw out the indictment of five former Blackwater security guards over a shooting in Baghdad in 2007 that left 17 Iraqis dead and about 20 wounded. The judge cited misuse of statements made by the guards in his decision, which brought to a sudden halt one of the highest-profile prosecutions to arise from the Iraq war…A Justice Department spokesman, Dean Boyd, said no decision had been made about whether to appeal the judge’s ruling.