; or (ii) if a civilian, serve in the Department of Defense, or elsewhere in the civil service if approved by the Secretary, for a period equal to twice the length of the temporary assignment. (C) A provision that if the individual to be temporarily assigned fails to carry out the agreement, such individual shall be liable to the United States for payment of all expenses of the assignment, unless that failure was for good and sufficient reason, as determined by the Secretary of Defense. (D) In the case of an agreement for the temporary assignment of a member of the acquisition workforce, language ensuring that such member of the acquisition workforce does not improperly use pre-decisional or draft deliberative information that such member may be privy to or aware of related to Department programing, budgeting, resourcing, acquisition, or procurement for the benefit or advantage of the private-sector organization. (2) An amount for which an individual is liable under paragraph (1)(C) shall be treated as a debt due the United States. (3) The Secretary may waive, in whole or in part, collection of a debt described in paragraph (2) based on a determination that the collection would be against equity and good conscience and not in the best interests of the United States, after taking into account any indication of fraud, misrepresentation, fault, or lack of good faith on the part of the individual who is liable for the debt. (c) Termination An assignment under this section may, at any time and for any reason, be terminated by the Department of Defense or the private-sector organization concerned. (d) Duration (1) Except as provided in paragraph (2), an assignment under this section shall be for a period of not more than two years, renewable up to a total of four years. (2) An assignment under this section may be for a period in excess of two years, but not more than four years, if the Secretary determines that such assignment is necessary to meet critical mission or program requirements. (3) A member of the