[Code of Federal Regulations] [Title 4, Volume 1] [Revised as of January 1, 2008] From the U.S. Government Printing Office via GPO Access [CITE: 4CFR28.49] [Page 46] TITLE 4--ACCOUNTS CHAPTER I--GOVERNMENT ACCOUNTABILITY OFFICE PART 28_GOVERNMENT ACCOUNTABILITY OFFICE PERSONNEL APPEALS BOARD; PROCEDURES Subpart B_Procedures Sec. 28.49 Return of service. When service of a subpoena is effected by a person other than a United States Marshal or Deputy Marshal, that person shall certify on the return of service that service was made either: (a) In person, (b) By registered or certified mail, or (c) By delivery to a responsible person (named) at the residence or place of business (as appropriate) of the person to be served.