What was the second dawns plan?

[u/MoodCool877]

If their bunker can only generate enough water food and oxygen for 1200 people for five years and they had 1100 what was their plan when the 5 years were up and the ground would be survivable for another 200 years.

[u/immalurking]

The bunker was also abandoned for 95ish years. And so that could have affected the equipment.