For debris removal and emergency protective measures, FEMA asks whether you had jurisdiction over the area or legal authority to do the work at the time of the incident. For permanent work, it asks whether you were responsible for restoring the facility, based on ownership and any written agreements. Ownership is usually enough, unless the facility was leased out or under construction by a contractor.
Work outside your own boundaries is where this test usually fails. If you worked outside your jurisdiction, keep the agreement or legal authority that allowed it, such as a mutual aid agreement.