I am not sure that having stockpiles of food is going to help in time of trouble. I see people displaced due to earthquakes, fires, floods, volcanoes, wars, tornadoes - and any stockpiles they may have are completely lost to them. The Lord who fed His people with manna and brought water from a rock is not without resources for His people in the last days. What we need to stock up on is to hide His Word in our hearts lest we be like the foolish virgins whose lamps go out due to lack of the oil of the Holy Spirit when we need it.