10 U.S.C. § 4205

(a) The Secretary of Defense shall submit to Congress each calendar year, not later than 45 days after the President submits the budget to Congress under section 1105 of title 31 , budget justification documents regarding development and procurement schedules for each weapon system for which fund authorization is required by section 114(a) of this title , and for which any funds for procurement are requested in that budget. The documents shall include data on operational testing and evaluation for each weapon system for which funds for procurement are requested (other than funds requested only for the procurement of units for operational testing and evaluation, or long lead-time items, or both). A weapon system shall also be included in the annual documents required under this subsection in each year thereafter until procurement of that system has been completed or terminated, or the Secretary of Defense certifies, in writing, that such inclusion would not serve any useful purpose and gives his reasons therefor. (b) Any documents required to be submitted under subsection (a) shall include detailed and summarized information with respect to each weapon system covered and shall specifically include each of the following: (1) The development schedule, including estimated annual costs until development is completed. (2) The planned procurement schedule, including the best estimate of the Secretary of Defense of the annual costs and units to be procured until procurement is completed. (3) To the extent required by the second sentence of subsection (a), the result of all operational testing and evaluation up to the time of the submission of the documents, or, if operational testing and evaluation has not been conducted, a statement of the reasons therefor and the results of such other testing and evaluation as has been conducted. (4) (A) The most efficient production rate, the most efficient acquisition rate, and the minimum sustaining rate, consistent with the program priority established for such weapon system by the Secretary concerned. (B) In this paragraph: (i) The term “most efficient production rate” means the maximum rate for each budget year at which the weapon system can be produced with existing or planned plant capacity and tooling, with one shift a day running for eight hours a day and five days a week. (ii) The term “minimum sustaining rate” means the production rate for each budget year that is necessary to keep production lines open while maintaining a base of responsive vendors and suppliers. (c) In the case of any weapon system for which procurement funds have not been previously requested and for which funds are first requested by the President in any fiscal year after the Budget for that fiscal year has been submitted to Congress, the same documentation requirements shall be applicable to that system in the same manner and to the same extent as if funds had been requested for that system in that budget.