; and (B) contractor delivery schedules shall be revised and the small business concern or nonprofit organization, as applicable, shall be eligible for equitable adjustments based on the revised schedules. (3) Prompt payments Notwithstanding any other provision of law or regulation, during any period in which the President invokes the authorities of the Defense Production Act of 1950 ( 50 U.S.C. 4501 et seq.), for any payment due by the head of a Federal agency on a contract for an item of property or service provided— (A) with respect to a prime contractor (as defined in section 8701 of title 41, United States Code) that is a small business concern or nonprofit organization, the head of the Federal agency shall, to the fullest extent permitted by law and to the maximum extent practicable, establish an accelerated payment date of 15 days after a proper invoice for the amount due is received