Private security guards who worked for Blackwater repeatedly shot wildly into the streets of Baghdad without regard for civilians long before they were involved in a 2007 shooting episode that left at least 14 Iraqis dead, federal prosecutors charge in a new court document…The new accusations were included in a document filed by prosecutors last week in the criminal case against five former Blackwater guards who have been charged with manslaughter in federal court in Washington in connection with the shootings in Nisour Square, in Baghdad, on Sept. 16, 2007. The guards have pleaded not guilty and have argued that they did not fire their weapons with criminal intent in the Nisour Square case.