; (B) has been accepted into a missionary program described in paragraph (3)(A); and (C) will perform missionary work at a location listed in the blanket-petition approval notice. (5) Limitation (A) In general The Secretary of Homeland Security may only include, in its approval of a blanket petition, locations of missionary service for which the Secretary has previously conducted a site inspection in connection with an individual petition for a religious worker. (B) Defined term In this paragraph, the term location of missionary service means a specific worksite or a geographic area with specific boundaries. If the location of missionary service is a geographical area with specific boundaries, the location shall include a head office or facility that can be reasonably subject to a site inspection. (6) List of authorized locations of missionary service (A) Notice When the Secretary of Homeland Security approves a blanket petition filed under paragraph (2), the Secretary shall issue a notice to the petitioner containing a list of the locations of missionary service authorized under the blanket petition. Such approval shall remain valid unless revoked by the Secretary of Homeland Security for good cause shown. (B) Amendment A petitioner under this subsection may file a petition at any time seeking to amend the list of locations of missionary service that were previously authorized. .