Intelligence Community and Its Use of Contractors: Congressional Oversight Issues [August 18, 2015] [open pdf - 765KB]
"Contractors have been and are an integral part of the intelligence community's (IC's) total workforce (which also includes federal employees and military personnel). Yet questions have been raised regarding how they are used, and the size and cost of the contractor component. Of particular interest are core contract personnel, who provide direct technical, managerial, and administrative support to agency staff. Examples of these types of support are collection and operations, analysis and production, and enterprise information and technology. The use of core contract personnel enables the IC to meet its needs, which may involve obtaining unique expertise or surge support for a particular mission, or augmenting insufficient in-house resources."
CRS Report for Congress, R44157
Federation of American Scientists: http://www.fas.org/sgp/crs/index.html