22 C.F.R. § 511.12
If a claimant does not agree to a settlement of a claim of which is considered fair and equitable by the Board's responsible officials, the claimant, upon the final disposition thereof by the Board, may elect to file suit. Relief from claims which are disallowed may be sought by filing suit in the U.S. District Court for the district where the claimant resides or wherein the act of omission complained of occurred. The failure of the Board to make final disposition of a claim within 6 months after it has been filed shall, pursuant to 28 U.S.C. 2672 , and at the option of the claimant at any time thereafter, is deemed a final denial of the claim. If a suit is filed against the Government involving the Board, the Department of Justice will request the Board to furnish the complete file on the case. The Office of the General Counsel will represent the Board in all negotiations with the Department of Justice.
22 C.F.R. §511.12