What the CBO really likes is prepositioned ships, loaded with equipment. The drawbacks there, of course, include having the wrong equipment for the fight, not having adequate port facilities to offload the equipment, or needing to get into a land-locked country.
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.