In other Iraq news, the private security firm Blackwater USA is facing more scrutiny following the disclosure its guards were involved in at least two shooting incidents last week. According to The Washington Post, a Blackwater employee shot and killed an Iraqi driver on Thursday. Blackwater employees say they fired to avoid a possible attack after the driver ignored repeated warnings. But witnesses said the shooting was unprovoked. The attack led to a standoff with Iraqi police after the Blackwater guards refused to divulge their names or provide details. One day earlier, Blackwater guards traded gunfire with Iraqi insurgents after their convoy came under attack in Baghdad.