The Air Force A-10 fighter aircraft divestment decision came out of a strategy-based, portfolio-wide review of alternatives used to develop the budget at lower than previously anticipated levels. The Department of Defense (DOD) and Air Force strategic guidance prioritized, among other things, fifth-generation aircraft such as the F-35, readiness, and multirole aircraft, while placing a lower priority on single-role aircraft like the A-10. In developing its fiscal year 2015 budget request, the Air Force examined its entire portfolio in light of this guidance and concluded that the benefits of divesting the A-10 outweighed the cost of retaining it. DOD reviewed and approved the Air Force A-10 divestment decision and submitted this as part of the fiscal year 2015 budget request.
The Air Force has not fully assessed the cost savings associated with A-10 divestment or its alternatives. In its fiscal year 2015 budget request, the Air Force estimated that divesting the A-10 would allow it to save $4.2 billion over its 5-year budget plan; however, our analysis found that the Air Force’s estimated savings are incomplete and may overstate or understate estimated savings. In presenting its budget to Congress, the Air Force provided a number of alternatives to A-10 divestment that would also result in approximately $4.2 billion in cost savings. However, these alternatives were rough estimates that were illustrative only and not fully considered as alternatives to A-10 divestment, according to Air Force officials.
Finally, Air Force divestment of the A-10 will create potential gaps in close air support (CAS)—a mission involving air action against hostile targets in proximity to friendly forces—and other missions, and DOD is planning to address some of these gaps ....