-midsized organization
-defines what GAO does
-provides tha tasks GAO performed in 1990
*over 1200 written reports
*provided testimony
*offered legal opinion
*resolved contractual disputes
-discusses the divisions of GAO
*14 regional offices and 2 overseas offices
*4 program divisions and 3 technical divisions

Why provide those types of details?
Kleimann wants her readers to understand not only what GAO does, but the process of the work that goes on. That's why she gave the structural outline of the offices, programs, teams etc to show who handles what and how big the organization actually is. Also, she goes into detail of the work they submit so the readers have a better understanding of what it is they do.