I'm sure to always let someone know what drainage I'm in but most places up here you better count on self rescue. We don't hunt out of stands so a drainage or a mountain are about as specific as it gets. Cell phones don't work here unless your at the top of the mountain, Marine VHF works in coastal areas, Aviation VHF only works where there are planes flying, my girlfriend carries a personal EPIRB for big trips but mostly we just count on each other or ourselves.