Code of Federal Regulations Title 5. Administrative Personnel § 5.1620.20 Scope

(1) A justice or judge of the United States as defined in 28 U.S.C. 451;

(2) A bankruptcy judge appointed under 28 U.S.C. 152 or a United States magistrate judge appointed under 28 U.S.C. 631 who has chosen to receive a judges' annuity described at 28 U.S.C. 377 or section 2(c) of the Retirement and Survivors' Annuities for Bankruptcy Judges and Magistrates Act of 1988, Public Law 100–659, 102 Stat. 3910–3921;

(3) A judge of the United States Court of Federal Claims appointed under 28 U.S.C. 171 whose retirement is covered by 28 U.S.C. 178;  and

(4) A judge of the Court of Veterans Appeals appointed under 38 U.S.C. 7253.