totally agree about the 1st rule of survival, use your head it's the best tool you possess. ed fowler lives in that area of wyoming that i call marginal enviroment: not a lot of trees or water , hot in summer & can drop to minus 25 in the winter. having driven thru that area twice i relate it to very high desert which can be hit by extreme winds. i recall once when he fell on a down winding river or stream. he could'nt stand up & was slowly sliding to a wet frozen death since the ice was glass slick. he used his knife to stab & pull himself to a bank that allowed egress.--dennis