Geez. Disaster drill? What disaster ever came on a convenient schedule? As for getting into a group, the advice is to go to the worldly shelters, or a relative( preferably believing) When they went to the Astrodome witb signs to extract witnesses it was to place them in a private home somewhere. Not a compound or any place that would cost money.
Better to rely on catholic relief, salvation army OR the better organized mormons and hope for compassion.