GAO

The General Accounting Office (GAO) was a government agency before the Great War that housed their Department of Research Subsidies in an office building in the Falls Church area.

Appearances
The General Accounting Office is mentioned only in Fallout 3.

Behind the scenes
The General Accounting Office was the original name of the Government Accountability Office, a federal agency that audits, investigates and evaluates matters for Congress. In real-life, the agency was renamed in 2004.