Md. Code, Public Safety § 13A–1053

A person subject to this title who, in the presence of a court–martial, a board of officers, a military commission, a court of inquiry, a preliminary hearing, or an officer taking a deposition, of or for the United States, wrongfully refuses to qualify as a witness or to answer a question after having been directed to do so by the person presiding shall be punished as a court–martial may direct.