Many of us recall what was referred to as the "Cold War"....this was somewhere back in the early 60s. All of this centered around how we were going to survive a nuclear attack.
Dog tags were issued to many school children who also went through the "duck-and-cover" drills. The government began issuing brochures, films, and radio advertisements to prepare US citizens of such an attack.
Also...many things were put into place to protect officials of our government...this was known as the "Doomsday Fleet."