National Defense Authorization Act for Fiscal Year 2010…
“ In General.— Not later than 90 days after the date of the enactment of this Act, the Secretary of Defense shall submit to the congressional defense committees a report on the procurement of 4.5 generation fighter aircraft. The report shall include the following: (1) The number of 4.5 generation fighter aircraft needed to be procured during fiscal years 2011 through 2025 to fulfill the requirement of the Air Force to maintain not less than 2,200 tactical fighter aircraft. (2) The estimated procurement costs for those aircraft if procured through annual procurement contracts. ”
