The Secretary of Defense shall submit to Congress each year, not later than five days after the date on which the President’s budget is submitted to Congress that year under
section 1105(a) of title 31, a future-years defense program (including associated annexes) reflecting the estimated expenditures and proposed appropriations included in that budget. Any such future-years defense program shall cover the fiscal year with respect to which the budget is submitted and at least the four succeeding fiscal years.