The investigator blames KBR, the largest U.S. contractor in Iraq, and two KBR supervisors for the incident, saying there is "credible information ... they failed to ensure that work was being done by qualified electricians and plumbers, and to inspect the work that was being conducted."

The e-mail, written late last year, says the investigation report was being reviewed by CID headquarters for a legal opinion to determine probable cause before the case could be referred to the military court system or the Department of Justice for possible

How tragic.