The Special Activities Division (SAD) is a division in the United States Central Intelligence Agency's (CIA) National Clandestine Service (NCS) responsible for covert operations known as "special activities". Within SAD there are two separate groups, SAD/SOG for tactical paramilitary operations and SAD/PAG for covert political action.
Bryan Mills worked for the SAD as a "Preventer".
Special Operations Group (SOG) SOG is the department within SAD responsible for operations that include the collection of intelligence in hostile countries and regions, and all high threat military or intelligence operations with which the U.S. government does not wish to be overtly associated. As such, members of the unit (called Paramilitary Operations Officers and Specialized Skills Officers) normally do not carry any objects or clothing (e.g., military uniforms) that would associate them with the United States government. If they are compromised during a mission, the government of the United States may deny all knowledge.
SOG is generally considered the most secretive special operations force in the United States. The group selects operatives from other tier one special mission units such as Delta Force, DEVGRU and ISA, as well as other United States special operations forces, such as USNSWC, MARSOC, USASF and 24th STS.
SOG Paramilitary Operations Officers account for a majority of Distinguished Intelligence Cross and Intelligence Star recipients during any given conflict or incident which elicits CIA involvement. An award bestowing either of these citations represents the highest honors awarded within the CIA organization in recognition of distinguished valor and excellence in the line of duty. SAD/SOG operatives also account for the majority of the names displayed on the Memorial Wall at CIA headquarters indicating that the agent died while on active duty.
Political Action Group (PAG) PAG is responsible for covert activities related to political influence, psychological operations and economic warfare. The rapid development of technology has added cyberwarfare to their mission. Tactical units within SAD are also capable of carrying out covert political action while deployed in hostile and austere environments. A large covert operation usually has components that involve many, or all, of these categories, as well as paramilitary operations. Political and Influence covert operations are used to support U.S. foreign policy. Often overt support for one element of an insurgency would be counter-productive due to impression it would have on the local population. In this case, covert assistance allows the U.S. to assist without damaging these elements in the process. Many of the other activities (such as propaganda, economic and cyber) support the overall political effort. There has been issues in the past with attempts to influence the US media such as in Operation Mockingbird. However, these activities are now subject to the same oversight as all covert action operations.