[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: 4CFR28.48] [Page 46] TITLE 4--ACCOUNTS CHAPTER I--GOVERNMENT ACCOUNTABILITY OFFICE PART 28_GOVERNMENT ACCOUNTABILITY OFFICE PERSONNEL APPEALS BOARD; PROCEDURES Subpart B_Procedures Sec. 28.48 Service. Service of a subpoena may be made by a United States Marshal or Deputy Marshal or by any person who is over 18 years of age and not a party to the proceeding.