United States Army Intelligence and Security Command
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Department of the Army
Personnel Security Investigation - Center of Excellence
6280 Guardian Gateway, Suite 1
Aberdeen Proving Ground, MD 21005

Personnel Security Investigation Center of Excellence


Serves as the Army's centralized activity for the accurate and efficient administrative validation, review and submission of all Army (Active, Guard, and Reserve) background investigations required for security clearances, federal employment, and Common Access Card (CAC) issuance, while providing customer service and support to Army stakeholders worldwide.


Established in 2010, and located on Aberdeen Proving Ground, Maryland, the PSI-CoE was established to centralize and streamline the process of submitting background investigations for the Department of the Army.

Our History page provides a chronological account of the Personnel Security Investigation Center of Excellence (PSI-CoE).

The PSI-CoE initiates background investigations, reviews the electronic Questionnaires for Investigations Processing (e-QIP) form, assists applicants through the e-QIP process, and submits standardized and quality controlled background investigations to Defense Counterintelligence and Security Agency (DCSA).


Founded on the proven Lean Six Sigma principles of centralization, standardization, and customer support. The PSI-CoE integrates and supports the National reform initiatives and serves Army units/organizations worldwide.

Our principle goals are to relieve the administrative burden tied to the beginning of the background investigation process to positively impact readiness for the warfighter and improve timeliness for the civilian hiring process. We provide dedicated personnel to assist applicants through the beginning steps of the security clearance and suitability screening process.


PSI-CoE Customer Service Center

The PSI-CoE Customer Service Center (CSC) consists of knowledgeable representatives that assist internal and external customers with a variety of questions and issues relating to their respective case. Our customers are comprised of applicants completing the background investigation request, security managers/human resource personnel requesting the background investigation, supervisors, and the Office of Personnel Management (OPM) investigators.

For customer support, any applicant needing assistance with their e-QIP form or obtaining their Registration Code should contact our Questions box at usarmy.apg.inscom.mbx.psip-questions@army.mil

Any requester needing assistance should contact our Requesters box at usarmy.apg.inscom.mbx.psip-requesters@army.mil

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Site Last Updated: 15 August 2023