An Iraqi man rides a bicycle passing by a remains of a car in Baghdad, 20 September 2007. Two Christian Iraqi women were shot to death in central Karradah, Baghdad, Oct. 9, 2007. Iraqi police, and witnesses said that the men who shot them were in a convoy of four SUVs commonly used by private security companies. While there was no indication Blackwater USA was involved, the attack threatened to increase calls for limits on the security firms that mounted after the Sept. 16 shooting deaths of as many as 17 Iraqi civilians allegedly that company's guards. [Agencies]