10 U.S.C. § 847

(a) In General .— (1) Any person described in paragraph (2) who— (A) willfully neglects or refuses to appear; or (B) willfully refuses to qualify as a witness or to testify or to produce any evidence which that person is required to produce; is guilty of an offense against the United States. (2) The persons referred to in paragraph (1) are the following: (A) Any person not subject to this chapter who— (i) is issued a subpoena or other process described in subsection (c) of section 846 of this title (article 46); and (ii) is provided a means for reimbursement from the Government for fees and mileage at the rates allowed to witnesses attending the courts of the United States or, in the case of extraordinary hardship, is advanced such fees and mileage. (B) Any person not subject to this chapter who is issued a subpoena or other process described in subsection (d) of section 846 of this title (article 46). (b) Any person who commits an offense named in subsection (a) shall be tried on indictment or information in a United States district court or in a court of original criminal jurisdiction in any of the Commonwealths or possessions of the United States, and jurisdiction is conferred upon those courts for that purpose. Upon conviction, such a person shall be fined or imprisoned, or both, at the court’s discretion. (c) The United States attorney or the officer prosecuting for the United States in any such court of original criminal jurisdiction shall, upon the certification of the facts to him by the military court, commission, court of inquiry, board, or convening authority, file an information against and prosecute any person violating this article. (d) The fees and mileage of witnesses shall be advanced or paid out of the appropriations for the compensation of witnesses.