JP 3-28, page 25

Overview I-3 See DODD 3025.18, Defense Support of Civil Authorities (DSCA); DODI 3025.22, The Use of the National Guard for Defense Support of Civil Authorities; and Department of Defense Manual (DODM) 3025.01, Department of Defense Manual, Defense Support of Civil Authorities, Volumes 1-3, for more information. b. DSCA is DOD support rendered only in the homeland, which relies on the ability of the military commander to integrate DOD capabilities with other resources and capabilities to achieve objectives identified by the requesting civil authorities. Military forces are required to coordinate, integrate, and synchronize their support with other government and nongovernment agencies and organizations. A range of domestic responses is provided by the Active Component (AC) and Reserve Component (RC), which includes the NG. c. The NG conducts domestic operations as support provided by the NG of the states while in state active duty status or Title 32, USC, duty status to civil authorities for domestic emergencies and designated law enforcement and other activities. Commanders should be aware that NG support provided in a state active duty or in a Title 32, USC, status differs from federal military support and its associated command and control (C2) of assigned forces. d. It is DOD policy that defense support to cyberspace incident response applies to all DOD components. It also applies to the NG personnel when SecDef determines, with the concurrence of the governors of the affected states, that it is appropriate to employ NG personnel in Title 32, USC, status to fulfill a request for defense support of civil authorities. For additional information on interorganizational issues, see Joint Publication (JP) 3-08, Interorganizational Cooperation. For more information on NG domestic operations, see ATP 3-28.1/MCRP 3-30.6/NTTP 3-57.2/AFTTP 3-2.67, Multi-Service Tactics, Techniques, and Procedures for Defense Support of Civil Authorities (DSCA). For more information on defense support to cyberspace incident response, see Directive-Type Memorandum (DTM) 17-007, Interim Policy and Guidance for Defense Support to Cyber Incident Response. e. DSCA capabilities are generally derived from DOD warfighting capabilities that may be applied to domestic assistance. In the case of the NG, Congress authorizes National Guard and Reserve Equipment Appropriation funds to purchase commercial off-the-shelf capabilities that also perform as DSCA-related necessary equipment, personnel, and training for response to domestic emergencies. Unlike DSCA operations, foreign humanitarian assistance operations are conducted by DOD outside of the US homeland. Foreign humanitarian assistance operations are DOD activities, normally in support of the United States Agency for International Development (USAID) or Department of State (DOS), conducted outside the US and its territories to relieve or reduce human suffering, disease, hunger, or privation. For additional information, see JP 3-29, Foreign Humanitarian Assistance.