Security Clearance Manual is an indispensable guide for security clearance applicants, personnel security specialists and military recruiters. It provides detailed explanations of the investigative and adjudicative processes with step by step instructions for completing the security application form, tips on mitigating suitability issues and numerous case examples.
William Henderson is a personnel security consultant and a retired federal agent, who worked as a field investigator and supervisor for the Defense Investigative Service (DIS) and its successor organizations, the Defense Security Service (DSS) and the Office of Personnel Management's Federal Investigative Services Division (OPM-FISD) for over 20 years. He was previously an Army Counterintelligence Agent and a security manager at the Satellite Control Facilities Operation of Ford Aerospace.
He wrote his first personnel security investigation report in 1970 while in the U.S. Army. His military assignments included CI Special Operations in Japan and Korea, Source Administration in Vietnam, CI field office duty near Chicago, tactical CI operations in Colorado Springs, and a position on the J2 staff at CINCLANT.
While with DIS, DSS, and OPM, he was a Special Agent, Senior Resident Agent, and Assistant Special Agent in Charge and worked primarily in Monterey, California. In the 1980's he conducted numerous security investigations of former Soviet Bloc Emigres and Refugees who were teachers at the Defense Language Institute. He also frequently conducted investigations in major metropolitian areas all over the United States.










