General Services Administration (GSA)

DoD agency auditing defense contractors' costs and compliance.

DoD agency administering defense contracts on behalf of contracting officers.

The cabinet department focused on U.S. economic growth, encompassing agencies such as the Census Bureau and NIST, contracting for statistical, data, and standards research services.

The cabinet department responsible for national defense and the single largest buyer in federal contracting, spanning weapons systems, IT, services, and research. Also referred to as Department of War.

The cabinet department managing the U.S. nuclear weapons stockpile, energy research, and the national laboratory system, contracting heavily for lab management and large-scale science and engineering work.

The cabinet department responsible for protecting public health, including Medicare, Medicaid, the Centers for Disease Control and Prevention (CDC), the Food and Drug Administration (FDA), and NIH, and a large federal purchaser of health IT and research support.

The cabinet department coordinating protection of the U.S. against terrorism and other threats, encompassing components such as U.S. Customs and Border Protection (CBP), the Transportation Security Administration (TSA), FEMA, and the Cybersecurity and Infrastructure Security Agency (CISA).

The cabinet department enforcing federal law, contracting for law enforcement technology, forensic services, and litigation support.

The federal agency managing U.S. diplomacy and foreign relations, and a major buyer of embassy security, construction, and language services.

The cabinet department providing healthcare, disability benefits, and burial services to veterans, and a major buyer of healthcare IT and medical services.

The federal agency enforcing environmental laws, contracting for environmental remediation, water infrastructure, and scientific research services.

The DHS agency that coordinates federal disaster response, contracting heavily for logistics, temporary housing, and program management support after declared disasters.