; and (2) transmit to the Archivist upon approval for postponement by the original classification authority upon completion of other action authorized by this subtitle, all unidentified anomalous phenomena records of the Government office the public disclosure of which has been postponed, in whole or in part, under the standards of this subtitle, to become part of the protected, yet-to-be disclosed, or classified portion of the Collection. (f) Custody of postponed unidentified anomalous phenomena records An unidentified anomalous phenomena record the public disclosure of which has been postponed shall, pending transmission to the Archivist, be held for reasons of security and preservation by the originating body until such time as the information security program has been established at the National Archives as required in section 1841(d)(2). (g) Periodic review of postponed unidentified anomalous phenomena records (1) In general All postponed or redacted records shall be reviewed periodically by the originating agency and the Archivist. .(2) Requirements (A) Public disclosure A periodic review under paragraph (1) shall address the public disclosure of additional unidentified anomalous phenomena records in the Collection under the standards of this subtitle. (B) Unclassified written description of reason All postponed unidentified anomalous phenomena records determined to require continued postponement shall require an unclassified written description of the reason for such continued postponement relevant to these specific records. Such description shall be provided to the Archivist and published in the Federal Register upon determination. (C) Periodic review