Kinda not really? The XB-70 cancellation left a hole (next generation strategic bomber) that was eventually filled by the B-1. But the initial B-1(A) was envisi

Kinda not really? The XB-70 cancellation left a hole (next generation strategic bomber) that was eventually filled by the B-1. But the initial B-1(A) was envisioned to be somewhat lower speed, but still fast (Mach 2), and specifically a low altitude penetrator (XB-70 was a high speed, high altitude plane). It then got reworked into the B-1B which is uh... weird role. It's even slower than the B-1A, somewhat more stealthy, and really supposed to be used as a cruise missile truck. Arguable how much value the B-1B really provided.