Most of DSS activities are performed at the Defense Security Service headquarters, located on Marine Corps Base, Quantico, Va., right outside of the nation's capital in Washington, DC, at:

27130 Telegraph Rd.
Quantico, VA 22134
(571) 305-6562

Employees at Quantico, Mill Road, and Chantilly locations will all follow OPM's operating status guidelines for closures, dismissals and delays. The current OPM operating status is available here:

For unique situations (such as those affecting specific buildings or Marine Corps Base Quantico), DSS will use the a mass notification system or telephone rosters to notify employees as to the operating status.

The operating status of Marine Corps Base Quantico can be found here.

For other locations in the National Capital Region, check here for information on operating status.

Personnel Security Management Office for Industry

Personnel Security Management Office for Industry (PSMO-I) is located at:

7556 Teague Road, Suite 500
Hanover, MD 21076

Employees at the Personnel Security Management Office will follow the operating status guidelines for Fort George G. Meade. Click here for the operating status.

Center for Development of Security Excellence

The Center for Development of Security Excellence (CDSE) is located in Linthicum, Md., at:

938 Elkridge Landing Road
Linthicum, MD 21090

In the event of inclement weather, or any other event that might require early dismissal from or closing of the CDSE building in Linthicum, MD, call (410) 689-7720.

Regional & Field Offices

DSS has four Regional Offices and 45 field offices across the nation.