41 U.S.C. 1702(b)(3)(G), requires agency heads to establish and maintain a procurement career management program and a system for the selection, appointment, and termination of appointment of contracting officers. Agency heads or their designees may select and appoint contracting officers and terminate their appointments. These selections and appointments shall be consistent with Office of Federal Procurement Policy's (OFPP) standards for skill-based training in performing contracting and purchasing duties as published in OFPP Policy Letter No. 05-01, Developing and Managing the Acquisition Workforce, April 15, 2005.