a person who believes a catastrophic disaster or emergency is likely to occur in the future and makes active preparations for it, typically by stockpiling food, ammunition, and other supplies. Preppers are different than Survivalists in the sense that preppers are more likely to prepare for disasters that are local or personally related to themselves, for example a person who lives near a forest might prepare for forest fires, another for earthquakes. Whereas Survivalists tend to prepare for world wide war.