Defense Security Service, based in Quantico, VA, is the largest security agency in the federal government dedicated to safeguarding America's trusted workforce and workspaces. With a focus on personnel security, industrial security, counterintelligence, and insider threat, DSS serves over 100 federal entities and 10,000 cleared companies annually.
Offering a range of services including background investigations, adjudication, and security training, DSS plays a vital role in maintaining national security through its comprehensive security programs. The agency's mission is to protect sensitive information, personnel, and facilities critical to the nation's defense and security.
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