Have a vehicle loaded with supplies, when overrun drive it away from the home to an area completely cleared, but close enough to the woods to sneak in at night to resupply. Disable the car. Then snipe anyone going near from a secure mountain area.
Wernher von Braun Gravestone: Psalms 19:1
The heavens declare the glory of God; and the firmament showeth his handiwork.
ASK YOURSELF if you dare, at what height above the Earth do you achieve weightlessness? You don't know and have never known, but the answer will shock you.