You're the warden of a maximum security prison, and there's a national disaster that kills unknown millions of people and completely isolates your prison from civilization. Most of your guards flee to find their families, and you're left in a tough spot. You can't maintain the prison and its population by yourself, and if you leave then all the prisoners will die from thirst and starvation in short order. If you start releasing prisoners, the "safe" ones you let out will probably force you to release their friends as well. You yourself may not be in any immediate danger from the prisoners you release to fend for themselves, but you're pretty sure that some among the population will quickly return to preying on the weak and innocent, particularly in a society that's been disrupted by calamity. What do you do?