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@DCSAgov: DYK: On Dec. 29, 1971, a SECDEF memorandum established the Defense Investigative Service (DIS), which became operational on Oct. 1, 1972. DIS was renamed the Defense Security Service (DSS) in 1999, then the Defense Counterintelligence and Security Agency in 2019. #DCSAHistory https://t.co/Joeop6U5SY


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DYK: On Dec. 29, 1971, a SECDEF memorandum established the Defense Investigative Service (DIS), which became operational on Oct. 1, 1972. DIS was renamed the Defense Security Service (DSS) in 1999, then the Defense Counterintelligence and Security Agency in 2019. #DCSAHistory pic.twitter.com/Joeop6U5SY

— Defense Counterintelligence and Security Agency (@DCSAgov) December 29, 2023