We are looking at it as we would a nuclear weapon. It is certainly best if never used, but it is a strong deterrent all the time.
We want any engagement like that to be totally lopsided, one-sided, dominating. And this is the kind of weaponry that does it.
These are much like a nuclear weapon - they are best when not used. We want people to reconsider targeting Livermore.
It serves us best when it's never used, and hopefully it will never be used at all. Deterrence is 24/7.