Or the fact that they never barricaded and fortified the place. Dig ditches, reinforce fences, move into the farm, secure windows and dors, have an escape plan and a rendevous place, make a triple brick wall with adobe bricks. It is a damn forrest and you have tons of water, dirt and pine needles. That and liek you said stock up on food, weapons, fuel, medicine, clothes, tools, seeds, clothes, wood...