"Hmm, we do not have those in the north. Are Dirge sirens infallible? What would be the effect if they did not work?"
Knowing the answer to that specific question, I told Liv what I knew.
"Basically, the dirge sirens are what the battlefront uses to monitor our domain. Not knowing the real situation would allow the Reapers to be ambushed at the very least. At worst, it could lead to the undead amassing an army within our borders without our knowledge."
"That seems frightening. If that were the case, the fall of North America would only be a matter of time. Solving this problem has become a critical issue then," Liv remarked.
"Indeed. Husband, we need to know the extent of the damage as soon as possible. If the lower floors have already fallen, we need to reinforce them immediately. But the main problem will be manpower. We can either reclaim this area or go down to the 31st floor. We cannot do both."