If there's significant overlap with ICBMs I could see it being reasonable from the perspective of maintaining military production readiness.
Imagine you need a bunch of people trained to do X, and machines capable of Y, in order to build your missiles, but you don't need many missiles right now, but if a war against a major power broke out you'd need to ramp up production massively and instantly. Either you keep making missiles you don't need, or you somehow train people and maintain machines without actually using them, either way you're spending just to maintain readiness for no immediate value. Or you find a close enough use where you can get some value by producing something similar enough that you can convert to military use rapidly.
That wouldn't be so much political pork as actually practical. But I know little to nothing in this area, so just speculation.
Imagine you need a bunch of people trained to do X, and machines capable of Y, in order to build your missiles, but you don't need many missiles right now, but if a war against a major power broke out you'd need to ramp up production massively and instantly. Either you keep making missiles you don't need, or you somehow train people and maintain machines without actually using them, either way you're spending just to maintain readiness for no immediate value. Or you find a close enough use where you can get some value by producing something similar enough that you can convert to military use rapidly.
That wouldn't be so much political pork as actually practical. But I know little to nothing in this area, so just speculation.