Federal prosecutors in Washington are moving forward with a new criminal case against a group of former Blackwater security guards whose first prosecution on manslaughter charges collapsed amid allegations of government misconduct. A federal trial judge in Washington threw out the case against the guards after concluding that prosecutors unfairly used protected statements that the guards made following a fatal shooting of more than a dozen civilians in Iraq in 2007. [P]rosecutors say, the government has "developed a thorough, careful filter process" to ensure that prosecutors and grand jurors will not be exposed to the tainted information that doomed the earlier case.