here's abc's neal karlinksky. >> hit the jump. hit it. >> reporter: a father and son back country ski outing turning to a heart pounding fight for seconds as 5-year-old ethan goss he's fallen out of sight in that tree well. >> ethan? winston gaus digs his son out. the boy fighting sef indication. >> here we go. here we go. i got you. >> i need to breath. >> reporter: the video now viewed more than a milon tiles online as this father us his closos call 0 warn others causing it the m mt frightening experience he's had ass a rent. >> i iemember sitting there watching the video with him and my leg was shaking just a bit. it was pretty emotional afterwards. it was a true moment, know, for me to pull him out. >> i had a near death experience. >> you never expect something like that to happen to you. but oncet does it's kind of shocking. >> reporter: it's hard to see till you're up close. these branches block so much snow. one step down there you sink another six feet at least. northwest a alanche institute showsust how paralyzing it can

. >> reporter: neal karlinksky, washington. >> that i never even thought of. >> i love all that fresh powder. >> coming up, mail carriers are no stranger to danger. >> traditionally it's the occasional nasty dog. in a new jersey community, it was wild turkeys. introducing new k-y touch gel cr me. for massage and intimacy. every touch, gently intensified. a little touch is all it takes. wait oh, yes, wait a minute mr. postman, wait, wait mr. postman snee postal carriers are lauded for their adherence to their unofficial motto. >> neither snow nor heat nor rain nor gloom of night saves these carriers from the swift with completion of their appointed rounds. >> some people hear roosters. around here we wake up to gobble, gobble. >> reporter: it seems wild culled desack in hills dale. >> if you shoo them, they leave. >> no, they don't run. >> reporter: which is why we were here in the first place. >> i think that's ridiculous. it's silly. >> reporter: helen is talking about what happened after wild turkeys, yes, we found them, surrounded a letter carrier's truck obtuse. he was so upset, c

. >> reporter: neal karlinksky, abc news, snoqualmie pass, washington. >> i've got a long list of ski dangers i like to recite. of. >> i love all that fresh powder. that's what i was thinking. >>> coming up, mail carriers are no stranger to danger. >> traditionally it's the occasional nasty dog. it was wild turkeys. that's next. was wild turkeys. >> announcer: "world news wait, oh, yes, wait a minute mr. postman, wai wait oh yes wait just a minute mr. postman >> postal carriers are lauded for their adherence to their unofficial motto. >> yes, neither snow, nor rain nor heat nor gloom of night stays these carriers from their swift completion of their appointed rounds. >> but it doesn't say anything about wild turkeys. >> some people hear roosters. around here we wake up to gobble, gobble. cul-de-sac in hillsdale. if you shoo them they leave, right? >> no, they don't run. >> reporter: which is why we were here in the first place. >> i think that's ridiculous. it's silly. >> reporter: helen is talking about what happened after wild turkeys -- yes, we found them -- surrounded a letter car

c's neal karlinksky now on deepening mystery. >> reporter: as mysteries go, this one for being just as annoying as it is unexplained. [ screeching ] that high pitched sound, wreaking havoc on forest g grove, oregon, for weeks, mainly at night, even waking people up. >> isounds like brakes to me. the cyclical, you know, change your brakes. >> reporter: local officials have ruled out a water valve, gas leak or wildlife. and the arest train track is rarely used.d. annoying sound in the world? [ screeching ] >> guys, guy guys! >> reporter: unlike "dumb and dumber," this sound isn't so funny to people who live here. the fire department doesn't know what it is either. >> welcome "the x-files" back on tv again, so, here we are. >> reporter: the truth is out there, and whatever it is, it sure is loud. and baffling. [ screeching ] neal karlinsky, abc news, seattle. >> you know, yesterday our crew and our belief, i mean our crew thoughght it wasomething in the water system. >> that that's that loud out there in the winter. >> collect the water system. that's w what the crew thinks. >> good luck