Primary Agencies orchestrate Federal support on behalf of their RSF for Local, State, Tribal, Territorial, and Insular Area governments, and may lead field assessment or support teams, as necessary. There are three Primary Agencies that support the Natural and Cultural Resources (NCR) Recovery Support Function (RSF): the U.S. Department of the Interior, U.S. Environmental Protection Agency, and Federal Emergency Management Agency (FEMA). Responsibilities and support provided by Primary Agencies are defined and accomplished under a FEMA-issued Mission Assignment, Reimbursable Service Agreement, Interagency Agreement, or other funding mechanism subject to resource availability. Pre-disaster - NCR RSF Primary Agencies work through steady-state programs, in accordance with their statutory authorities, to support the development of strategies, plans, and activities to address disaster recovery issues for NCR. Post-disaster - NCR RSF Primary Agencies may staff NCR RSF Field Coordinator positions, provide technical assistance in the form of impact analyses, support the development of a Recovery Support Strategy (RSS) Report, implement NCR missions identified in the RSS Report, and develop lessons learned to provide feedback in planning and mitigating future NCR impacts.