The economic activity of a society consists of activities related to the production and consumption of goods and services. Since earliest times, the primary function of organized society has been economic in nature.
The Pentagon is a large office building, with about 6,500,000 sq ft (600,000 m 2), of which 3,700,000 sq ft (340,000 m 2) are used as offices. Approximately 23,000 military and civilian employees and about 3,000 non-defense support personnel work in the Pentagon. It has five sides, five floors above ground, two basement levels, and five ring corridors per floor with a total of 17.5 mi (28.2 km) of corridors.
Many U.S. cities are allowed to participate in the pension plans of their states; some of the largest have their own pension plans. The total number of local government employees in the United States as of 2002 is 13.2 million. There are 10.15 million full-time and 3.13 million part-time local-government civilian employees as of 2002.