The Defense Security Service (DSS), formerly known as the Defense Investigative Service (DIS), plays an important role in safeguarding United States' security. As a Department of Defense (DoD) agency, DSS makes its contribution to the National Security Community by conducting personnel security investigations and providing industrial security products and services, as well as offering comprehensive security education and training to DoD and other government entities. To complement its three primary missions: the Personnel Security Investigations Program (PSI); the Industrial Security Program (ISP); and the Security Education, Training and Awareness Program , DSS offers the unique advantage of integrating counterintelligence into its core security disciplines through training programs, policy development, and operational support to its field elements.
The mission of DSS is realized through the efforts of approximately 2,600 employees strategically located throughout the United States and Puerto Rico. Almost one half of the DSS workforce is comprised of Special Agents who accomplish approximately 500,000 personnel security investigations each year. Another 230 DSS employees are Industrial Security Representatives who oversee, advise, and assist more than 11,000 contractor facilities involved with classified contracts and research/development efforts.
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