I was the F.B.I. case agent who led the investigation of the Blackwater massacre in Baghdad. We originally went to Iraq thinking this shooting was some form of innocent civilians caught in the crossfire between Blackwater guards and insurgents. After only one week, we determined that this incident was not as presented by Blackwater personnel and their State Department lackeys, but it was a massacre along the lines of My Lai in Vietnam. Three of the guards were convicted of manslaughter and one of murder.