Legal specialists say that the U.S. government is unlikely to allow a trial in the Iraqi courts, because there is little confidence that trials would be fair. Contractors accused of crimes abroad could be tried in the United States under either military or civilian law; however, the applicable military law, the Uniform Code of Military Justice, was changed in 2006, and appears to now exempt State Department contractors that provide security escorts for a civilian agency. Prosecution under civilian law would be through the Military Extraterritorial Jurisdiction Act, which allows the extension of federal law to civilians supporting military operations; however, according to the deputy assistant attorney general in the Justice Department's criminal division, Robert Litt, trying a criminal case in federal court would require a secure chain of evidence, with police securing the crime scene immediately, while evidence gathered by Iraqi investigators would be regarded as suspect.