The Air Force says it may retire a total of 272 aircraft in Fiscal 2008. This includes both fixed-wing airplanes and helicopters. Scheduled to go are: 17 B-52s, 24 C-130Es, 32 F-15s, 35 F-16s, 42 F-117s (completing the retirement of the Nighthawk fleet), 48 KC-135Es, 10 MH-53J/M helicopters, 63 T-37Bs, and one U-2. Originally, the service requested permission to phase out more than 300 aircraft in 2008. In Fiscal 2009, USAF has asked Congress for permission to phase out 182 aircraft.
The rate of building B-21 bombers would speed up if the fiscal 2026 defense budget passes. But it remains unclear how much capacity would be added, and whether the Air Force would simply build the bombers faster, or buy more.