And while calling B-1A unable to survive, expected the old subsonic for decades B-52 to be able to live long enough to launch Hound Dog cruise missiles that were retired in 1975. the role then passed onto the slightly supersonic B1B, with the original ALCM first flown in 1977, operational in 1981, and that wasn't the later far more capable later ALCM of the 1980s
The low level attack profile of the B-1B is odd, as would still need to use LABS or laydown weapons with very long delay for when the 'Dial-a-Yield' on even the lowest settings