I remember in the '60s in the context of stories about an alien invasion of Earth the thing people loved and embraced within that concept was that nations would put aside disagreements and come together as a single planet and a single species to fight off the invasion...
Also I'm interested in the video game you are working on
Around the same time there was this video that claimed a tidy yard and painted house helped against nuclear attack https://www.youtube.com/watch?v=-hh01SdN64Y
And sweeping the forest will take care of the fire problem.
Though I can't remember the details, segregation in Civil Defense planning was touched upon by Garrett Graff in his book "Raven Rock."
The silence is deafening.
I remember in the '60s in the context of stories about an alien invasion of Earth the thing people loved and embraced within that concept was that nations would put aside disagreements and come together as a single planet and a single species to fight off the invasion...