WASHINGTON -- After denying it numerous times, the Pentagon said Wednesday that a North Carolina company provided armed security guards in Iraq under a subcontract buried so deeply the government couldn't find it. The secretary of the Army told two Democratic lawmakers in a letter that the Blackwater USA contract was part of a huge military support operation by run by Halliburton subsidiary KBR. The news came during a day of close scrutiny for Blackwater. The families of four Blackwater guards whose bodies were burned and dragged through the streets by a mob in Iraq told Congress on Wednesday that...