; or (B) if it is not clear which agency has appropriate subject matter interest and classification authority with respect to the information, to the Director of the Information Security Oversight Office of the National Archives and Records Administration. (3) Information Security Oversight Office action If the Director of the Information Security Oversight Office receives information under paragraph (2)(B), the Director shall determine which agency has appropriate subject matter interest and classification authority and submit the information, with appropriate recommendations, to the head of that agency for a classification determination. (4) Timing of determinations Not later than 30 days after the head of agency receives information pursuant to paragraph (2)(A) or (3), the head shall make a determination as to whether to classify the information. 4. Promoting efficient declassification review (a) In general Whenever the head of an agency is processing a request pursuant to section 552 of title 5, United States Code (commonly known as the Freedom of Information Act ) or the mandatory declassification review provisions of Executive Order 13526 ( 50 U.S.C. 3161 note; relating to classified national security information), or successor order, and identifies responsive classified records that are more than 25-years-of-age as of December 31 of the year in which the request is received, the head of the agency shall review the record and process the record for declassification and release by the National Declassification Center of the National Archives and Records Administration. (b) Application Subsection (a) shall apply— (1) regardless of whether or not the record described in such subsection is in the legal custody of the National Archives and Records Administration