United States. Bureau of the Budget and United States. Office of Management and Budget. "National Intelligence Program," in United States. Bureau of the Budget and United States. Office of Management and Budget. "Fiscal Year 2013," Budget of the United States Government (February 13, 2012) : 89-91. https://fraser.stlouisfed.org/title/54/item/19059/toc/313296 , accessed on March 29, 2024.