There's not many hills left that are fit (capable) for survival. There aren't nearly enough caves
for everybody and they'll belong to the strongest (best armed) anyhow. We won't be dealing with a bunch of British soldiers armed with muskets either. Think drones, heat-sensing sensors, guns way too advanced for our guns to deal with....like a great old songs says "No place to run to, no place to hide"! I'm grateful that I'm old and have very little to loose. Pity our offspring, especially the girls!