(a) Except for DoD, NASA, and the Coast Guard, the contracting officer may enter into a multi-year contract if the head of the contracting activity determines that—

(1) The need for the supplies or services is reasonably firm and continuing over the period of the contract; and

(2) A multi-year contract will serve the best interests of the United States by encouraging full and open competition or promoting economy in administration, performance, and operation of the agency’s programs.