(a) 10 U.S.C. 2858 requires agency head approval to expedite the completion date of a contract funded by a Military Construction Appropriations Act, if additional costs are involved. This approval authority may not be redelegated. The approval authority must--
(1) Certify that the additional expenditures are necessary to protect the National interest; and
(2) Establish a reasonable completion date for the project.
(b) The contracting officer may approve an expedited completion date if no additional costs are involved.