"KUBARK Counterintelligence Interrogation-July 1963," was originally obtained under the Freedom of Information Act by the Baltimore Sun in 1997. The KUBARK manual includes a detailed section on "The Coercive Counterintelligence Interrogation of Resistant Sources," with concrete assessments on employing "Threats and Fear," "Pain," and "Debility." The language of the 1983 manual, "Human Resource Exploitation Training, drew heavily on the language of the earlier manual, as well as on Army Intelligence field manuals from the mid 1960s generated by "Project X"-a military effort to create training guides drawn from counterinsurgency experience in Vietnam. Recommendations on prisoner interrogation included the threat of violence and deprivation and noted that no threat should be made unless the questioner "has approval to carry out the threat." The interrogator "is able to manipulate the subject's environment," the 1983 manual states, "to create unpleasant or intolerable situations, to disrupt patterns of time, space, and sensory perception."