Great topic. If you think about it we really are all in survival mode all the time. We just don't realize it. Driving on any road, but especially a two lane highway where the speed limit is 60 is a survival situation. As 3,000 pound bullets are missing us by a couple feet. We just don't think about it as such because we do dangerous necessary things like this everyday. If you throw an inch of sleet on that road the risk goes way up & we (hopefully) switch into a defensive survival mode & slow down or better yet decide to go home until the storm passes. (Assuming we can make that choice)