of the United States Attorney for the District of Columbia as of the day before the date described in subsection (b) and continues to be employed by the local prosecutor’s office designated for purposes of section 23–101(b), D.C. Official Code (as amended by subsection (a))— (1) such individual shall continue to be treated as an employee of the Federal Government for purposes of receiving benefits under any chapter of subpart G of part III of title 5, United States Code