Sole Source Justification - CostPerform Inactive Notice ID:HS002125PE003 See attached justification. Department/Ind.Agency Subtier Office DEPT OF DEFENSE DEFENSE COUNTERINTELLIGENCE AND SECURITY AGENCY (DCSA) DEFENSE CI AND SECURITY AGENCY NAICS 513210 - Software Publishers PSC IT AND TELECOM - BUSINESS APPLICATION/APPLICATION DEVELOPMENT SOFTWARE AS A SERVICE Data sourced from SAM.gov. View Official Posting »