Government Evacuation in Times of War/National Emergency

[LawAbidingCitizen]

During the second world war children from large cities were evacuated to the countryside and rural families were obliged to take these children in. It seems likely that in times of national emergency a similar rule may apply, and it could be the case this time that whole communities are transported to rural areas (even in severe case there would most likely be some form of government to carry out this plan). I wonder what your thoughts are on preparing for this type of scenario? How for example would you manage to hide your preps now with so many others now in your area?