Fulltime Operations Research Analyst (ORSA) with Security Clearance ClearanceJobs Fort Belvoir Posted 1 month ago The Red Gate Group is seeking a TS/SCI cleared Operations Research Analyst to support the Defense Threat Reduction Agency (DTRA) in Ft. Belvoir, VA. The DTRA Strategic Integration (SI) Directorate supports the mission of the Director DTRA by shaping DTRA’s