I'm not sure, but it is possible we do minor servicing on the missiles. e.g. swap out components for spares. However the missiles are regularly rotated back i

I'm not sure, but it is possible we do minor servicing on the missiles. e.g. swap out components for spares. However the missiles are regularly rotated back in to the common pool in the USA for servicing. The schedule is such that the USA could disable our deterrent within a couple of years if they so desired. So we have the nukes, but no independent way to deliver them.