Hmmm, I never really gave it much thought. I suppose I thought we were in a more realistic situation. For Z-day that is. I reckon that L4D/ WA zombies would leave the average citizen with very little chance of survival. I mean if the Z's had only human capabilities e.g. their strength reflected that of the body previous to turning, then I reckon we could survive well enough. But Behemoths, runners and jumpers make survival less likely. Even the fact that Wa zombies seem faster than the average human. I agree though standard rules of engagement seem like a good idea. If we wanted to get really nerdy we could split up into three threads Wa, shamblers and a mid point.