The DoD plans to invest $109 billion in its tactical air forces (TAF) between 2007 & 2013. Long term, DoD plans to replace aging legacy aircraft with fewer, more expensive but more capable & stealthy aircraft. Recapitalizing & modernizing TAF within today¿s constrained budget environment is a formidable challenge. DoD has already incurred substantial cost & schedule overruns in its acquisition of new systems, & further delays could require billions of dollars in additional investment to keep legacy aircraft capable & sustainable. This report describes the current status of DoD¿s new TAF acquisition programs; identifies current impacts on legacy aircraft modernization programs & retirement schedules; & assesses DoD¿s overall investment plan for TAF. Illustrations.

The F-35 Lightning II, also known as the Joint Strike Fighter (JSF), is the Department of Defense's most costly and ambitious aircraft acquisition, seeking to simultaneously develop and field three aircraft variants for the Air Force, Navy, Marine Corps, and eight international partners. The JSF is critical for recapitalizing tactical air forces and will require a long-term commitment to very large annual funding outlays. The current estimated investment is $323 billion to develop and procure 2,457 aircraft. This report discusses: (1) program cost, schedule, and performance; (2) manufacturing results; and (3) test plans and progress. The report's work includes interviews, cost data, test plans, production measures, and analyses by defense and contractor officials. Illus.