PSI offers specialized support and international logistics solutions to specific branches of the U.S. government. In particular, the company assists United States Central Command (CENTCOM) by sponsoring multinational counter-drug and counter-terrorism exercises, and helping nations develop human rights policies and programs. PSI also provides training, international logistics solutions and intelligence support to the command and supplies nonlethal equipment, such as helicopter support, intelligence platforms and command and control systems.

The company also supports the United States Special Operation Command (SOCOM) efforts by providing general support through Special Operations Forces Acquisition, Technology and Logistics program offices, and providing specific support to the Theater Special Operation Commands.

The United States Africa Command (AFRICOM) requires a specialized logistics company to provide expeditionary support. PSI also offers training, exercise and intelligence support and assists security cooperation assistance programs.