; or (2) material or equipment in economic order quantities when cost savings are achievable. (c) Condition for out-year contract payments A contract entered into under subsection (a) shall provide that any obligation of the United States to make a payment under the contract for a fiscal year after fiscal year 2019 is subject to the availability of appropriations or funds for that purpose for such fiscal year. (d) Limitation on termination liability A contract for construction of Virginia Class submarines entered into in accordance with subsection (a) shall include a clause that limits the liability of the United States to the contractor for any termination of the contract. The maximum liability of the United States under the clause shall be the amount appropriated for the submarines covered by the contract regardless of the amount obligated under the contract. 122. Arleigh Burke class destroyers (a) Authority for multiyear procurement (1) In general Subject to section 2306b of title 10, United States Code, the Secretary of the Navy may enter into one or more multiyear contracts, beginning not earlier than the fourth quarter of fiscal year 2018, for the procurement of up to 15 Arleigh Burke class Flight III guided missile destroyers. (2) Authority for advance procurement The Secretary of the Navy may enter into one or more contracts, beginning in fiscal year 2018, for advance procurement associated with the destroyers for which authorization to enter into a multiyear procurement contract is provided under paragraph (1), and for systems and subsystems associated with such destroyers in economic order quantities when cost savings are achievable. (3) Condition for out-year contract payments A contract entered into under paragraph (1) shall provide that any obligation of the United States to make a payment under the contract for a fiscal year after fiscal year 2018 is subject to the availability of appropriations or funds for that purpose for such fiscal year. (b) Modification to procurement of additional arleigh