Eight separate recognized class records for speed over a closed course (1,000 and 2,000 kilometers) with payload in piston-engine aircraft are set by two different AAF crews flying Boeing B-29A Superfortresses at Dayton, Ohio.
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.
