In the settlement of any claim pursuant to 32 U.S.C. 715 and this subpart, attorney fees will not exceed 20 percent of any award provided that when a claim involves payment of an award over $1,000,000, attorney fees on that part of the award exceeding $1,000,000 may be determined by the Secretary of the Air Force. For the purposes of this section, an award is deemed to be the cost to the United States at the time of purchase of a structured settlement, and not its future value.