Marine Corps Reference Publication (MCRP) 3-30.6  is a single source, reference guide for tactical-level units. It assists military planners, commanders, and individual Department of Defense (DoD) components employing military resources and integrating with National Guard forces while responding to domestic emergencies, in accordance with United States law. It supports planners and warfighters by establishing tactics, techniques, and procedures TTP for actions taken by DoD components when directed to support local, territorial, state, tribal, or federal authorities responding to domestic emergencies. MCRP 3-30.6 is applicable to DoD components tasked with supporting domestic incident responses.