; and (B) prepare such records for transmission to the Archivist for inclusion in the Collection. (2) Prohibitions (A) No unidentified anomalous phenomena record shall be destroyed, altered, or mutilated in any way. (B) No unidentified anomalous phenomena record made available or disclosed to the public prior to the date of the enactment of this Act may be withheld, redacted, postponed for public disclosure, or reclassified. (C) No unidentified anomalous phenomena record created by a person or entity outside the Federal Government (excluding names or identities consistent with the requirements of section 9006) shall be withheld, redacted, postponed for public disclosure, or reclassified. (b) Custody of unidentified anomalous phenomena records pending review During the review by the heads of Government offices under subsection (c) and pending review activity by the Review Board, each head of a Government office shall retain custody of the unidentified anomalous phenomena records of the office for purposes of preservation, security, and efficiency, unless— (1) the Review Board requires the physical transfer of the records for purposes of conducting an independent and impartial review; (2) transfer is necessary for an administrative hearing or other Review Board function; or (3) it is a third agency record described in subsection (c)(2)(C). (c) Review by heads of Government offices (1) In general Not later than 300 days after the date of the enactment of this Act, each head of a Government office shall review, identify, and organize each unidentified anomalous phenomena record in the custody or possession of the office for— (A) disclosure to the public; (B) review by the Review Board; and (C) transmission to the Archivist. (2) Requirements In carrying out paragraph (1), the head of a Government office shall— (A) determine which of the records of the office are unidentified anomalous phenomena records