[evgen]

At that level you are going to start with agencies that have an existing K&R team, potentially from your insurance underwriter (because if you are the sort of person who needs to consider or plan for this threat then you also have insurance for it.) The steps past that point are beyond me but probably involve both political contacts as well as consultants/contractors with specialized skills -- I would expect that one of your various law firms is probably going to be your primary interface.