as Lono said add some kerlix, betadine,jell burn pad, SF tourniquet,syringe for eye irrigation... last earthquake I was in was in the Philippines, but a lot of junk fell from the ceiling. I tend to overlook thermal and chemical burns when thinking first aid and they are very debilitating to travel. A small folding hack saw is in my GHB in case I need to open a chained gate. Since you have decided to forego firearms, I think I would store something like a small tomahawk head (hawking stick)or weighted mass that could turn you walking staff into a defensive tool. Might add a foil pouch or tin of tuna, eat the meat and use the remaining oil to heat some water, save the esbit tabs. You might think about pre dressing your feet with some duct (duck) tape... works well for our cross country team. regards Les