I've just recently started preparing myself for the SHTF scenario that may or may not happen in our country. One of the things I'm looking at getting is a gas mask. I was wondering what type of gas mask those of you are much more prepared than I am have gotten. Do you just go to a military surplus store and get whatever they have? Or are there any in particular that you would recommend? I've read a little bit about the Israeli Army N15 Gas Mask, is this a good way to go for the price?