8 GCA § 75.25: Subpoenas; Who May Serve.

A subpoena may be served by the marshal, by his deputy, by any peace officer of the Territory, or by any other person who is not a party and who is not less than eighteen (18) years of age. Service of a subpoena shall be made by delivering a copy thereof to the person named and by tendering to him the fee for one (1) day's attendance and the mileage allowed by law.