Servers in bomb shelters... in bomb shelters, you should arrange shopping centers with food tents! What happens,
Everyone knows where to run.
b) Half of it is already there, buying all the shit.
c)... more people entered the Christmas tree there, and nothing, fit in.
Food and fresh water, in quantities
All ventilation systems, air filters, etc. are wellined for rent money.
e) It remains to wait until the second half of the local population runs and shut the door, and there is outside at least the zombie apocalypse.