As the Board of Trustees considers necessary to properly administer and enforce this Division II or regulations adopted under this Division II, the Board of Trustees may: require any officer or unit of the State or of a political subdivision of the State to furnish the Board of Trustees without charge with a certified copy of any record or paper in the official custody of the officer or unit; and issue a summons, subpoena, or other process, for the attendance of witnesses and the production of documents before the Board of Trustees. The Board of Trustees, or any trustee on the Board of Trustees, may administer an oath to a witness who appears before the Board of Trustees. In addition to any hearing that Title 10 of the State Government Article requires, the Board of Trustees may hold hearings as necessary to perform its duties. The hearings are governed by regulations of the Board of Trustees. The Board of Trustees is not bound by technical rules of evidence. If the Board of Trustees approves an application for disability retirement on behalf of a State police officer under § 2-415(b) of the Public Safety Article, the Board of Trustees shall hold a hearing unless the officer waives the hearing in writing.