All sums heretofore or hereafter appropriated for the military and naval insurance appropriation and all premiums collected for yearly renewable term insurance deposited and covered into the Treasury to the credit of this appropriation shall be made available to the Department. All premiums that may hereafter be collected for yearly renewable term insurance shall be deposited and covered into the Treasury for the credit of this appropriation. Such sum is made available for the payment of the liabilities of the United States incurred under contracts of yearly renewable term insurance. Payments from this appropriation shall be made upon and in accordance with the awards by the Secretary.