The Defense Security Service (DSS) is an agency of the United States Department of Defense (DoD). Within areas of DoD responsibility, DSS is tasked with facilitating personnel security investigations, supervising industrial security, and performing security education and awareness training. It is not a Federal law enforcement organization; it does not have police powers. Originally known as the Defense Investigative Service (DIS), DIS was established in 1972.[1] DSS changed from DIS in 1999.