Rule 28 - Expert Witnesses and Interpreters(a)Expert witnesses. The Court may order the defendant or the government or both to show cause why expert witnesses should be appointed, and may request the parties to submit nominations. The Court may appoint any expert witnesses agreed upon by the parties, and may appoint witnesses of its own selection. An expert witness shall not be appointed by the Court unless the expert consents to act. A witness so appointed shall be informed of his duties by the Court in writing, a copy of which shall be filed with the Clerk, or at a conference in which the parties have an opportunity to participate. A witness so appointed shall advise the parties of the witness's findings, if any, and may thereafter be called to testify by the Court or by any party.(b)Interpreters. The Court may appoint an interpreter of its own selection and may fix the reasonable compensation of such interpreter. Such compensation shall be paid out of funds provided by law or by the State, as the Court may direct.