; Travel expenses The Chair of the Commission, in consultation with Vice Chair of the Commission, and in accordance with rules agreed upon by the Commission, may appoint and fix the compensation of an executive director and other additional technical and administrative personnel as may be necessary to enable the Commission to carry out its duties, without regard to the provisions of title 5, United States Code, governing appointments in the competitive service, and without regard to the provisions of chapter 51 and subchapter III of chapter 53 of such title relating to classification and General Schedule pay rates, except that no rate of pay fixed under this clause may exceed the equivalent of that payable for a position at level V of the Executive Schedule under section 5316 of title 5, United States Code. Travel expenses of the executive director and other additional technical and administrative personnel of the Commission shall be allowed at rates authorized for employees of agencies under subchapter I of chapter 57 of title 5, United States Code, except that foreign travel for official purposes by such director and personnel of the Commission is not authorized. (ii) Technical staff expertise requirement Technical staff of the Commission shall be individuals with substantial expertise in one or more of the areas described in subsection (c)(2). The expertise of such technical staff shall augment the ability of the Commission to have substantial expertise in all areas so described. (iii) Personnel as Federal employees (I) In general The executive director and any other personnel of the Commission shall be treated as employees under section 2105 of title 5, United States Code, for purposes of chapters 63, 81, 83, 84, 85, 87, 89, and 90 of such title. (II) Members of commission Subclause (I) shall not be construed to apply to members of the Commission. (iv) Detailees Any Federal Government employee may be detailed to the Commission without reimbursement from the Commission, and such detailee shall retain the