Survival for someone for whom survival is not a goal, but just a condition for completing a given task, is not a problem. Even if the introduction is as wild and crazy as an epidemic that turns dead people into predatory and extremely aggressive zombies, the special forces fighters will stick to their guns and, as prescribed by the departmental order, notify the personnel using the “Gathering” signal, take measures to bring the unit to the specified degree of combat readiness, they will receive the necessary weapons and ammunition according to wartime regulations... And what next? What should those who have been following orders all their lives do after there is no one left to give them? What should those who swore to defend the Motherland do, when instead of the Motherland there are a bunch of independent enclave settlements with a population of a few thousand inhabitants? And when, even among countless hordes of the living dead, people still remain the main and most terrible enemies of people?