There were several things it could be used for.
We had, and possibly still have one as well.
I worked on a section of a prototype (at least I think it was a prototype) in the early eighties.
I do not have a contract, so I suppose I can say that.:-)
This dang spell checker is giving me fits on this laptop.
According to Encyclopedia Astronautica, this thing was designed to carry nuclear mines among other toys.