; and (2) by inserting after paragraph (1) the following new paragraphs: (2) Business case for payment of aviation bonus amounts (A) In general The amount of the aviation bonus payable under paragraph (1)(B) under agreements entered into under subsection (d) during a fiscal year shall be determined solely through a business case analysis of the amount required to be paid under such agreements in order to address anticipated manning shortfalls for such fiscal year by aircraft type category. (B) Budget justification documents The budget justification documents in support of the budget of the President for a fiscal year (as submitted to Congress pursuant to section 1105 of title 31) shall set forth for each uniformed service the following: (i) The amount requested for the payment of aviation bonuses under this section using amounts authorized to be appropriated for the fiscal year concerned by aircraft type category. (ii) The business case analysis supporting the amount so requested by aircraft type category. (iii) For each aircraft type category, whether or not the amount requested will permit the payment during the fiscal year concerned of the maximum amount of the aviation bonus authorized by paragraph (1). (iv) If any amount requested is to address manning shortfalls, a description of any plans of the Secretary concerned to address such shortfalls by non-monetary means. (3) Tiered limitation on maximum amount of aviation bonus (A) In general The maximum amount of the aviation bonus payable under paragraph (1)(B) under agreements entered into under subsection (d) during a fiscal year shall vary by anticipated manning shortfalls for such fiscal year by aircraft type category. The variance shall be stated by tier correlating maximum bonus amounts with anticipated manning and retention levels, as follows: (i) Maximum amount payable (known as Tier I ) is the amount specified for the fiscal year concerned by paragraph (1)(B) and is payable under agreements for duty by aircraft type category in which— (I) the projected