One thing that could make some sense is if the US surrendered and they had to come in and take over the government --like governing us. In that unlikely scenar

One thing that could make some sense is if the US surrendered and they had to come in and take over the government --like governing us. In that unlikely scenario, they would need to have this info. On the other hand, why not just have a puppet government instead? Their long term goal was to Sovietize the world so, who knows, maybe these were dreamer cartographers.