Clients and Partners

  • National Aeronautics and Space Administration (NASA)
  • Department of Defense (DoD)
  • U.S. Special Operations Command (SOCOM) and its Component Commands
  • Defense Threat Reduction Agency (DTRA)
  • Department of Energy (DOE)
  • Department of Homeland Security (DHS)
  • Department of Justice (DOJ)
  • Department of State
  • Federal Emergency Management Agency (FEMA)
  • United States Geological Survey (USGS)
  • Amtrak

Teaming Partners

  • Applied Research Associates (ARA) 
  • CACI
  • Chenega Corporation
  • Cherokee Federal
  • HNTB
  • Lockheed Martin
  • Parsons
  • Perini
  • Preting Consulting
  • RMGS Inc
  • Sierra Nevada Corporation (SNC)
  • Vision Quest

Additionally, PSI participates in multiple Collective Bargaining Agreements (CBA) in coordination with Union members in various U.S. states.