32 C.F.R. § 1803.33
Each NACIC Office Chief in charge of an office which originated or has an interest in any of the records subject to the appeal, or designee, is a required party to any appeal; other interested parties may become involved through the request of the Coordinator when it is determined that some or all of the information is also within their official cognizance. These parties shall respond in writing to the Coordinator with a finding as to the classified status of the information including the category of protected information as set forth in § 1.5 of this Order, and, if older than ten (10) years, the basis for continued classification under §§ 1.6 and 3.4 of this Order. These parties shall also provide a statement as to whether or not there is any other statutory, common law, or Constitutional basis for withholding as required by § 6.1(c) of this Order. This response shall be provided expeditiously on a "first-in, first-out" basis taking into account the business requirements of the parties and consistent with the information rights of members of the general public under the Freedom of Information Act and the Privacy Act.
32 C.F.R. §1803.33