a large tree makes contact with a section of power lines on a residential street in bellingham, washingtonanches start smoldering, then ignite. >> there goes the first piece of branch. >> the wind would gust and it would blow it into the power line. >> caleb lives across the street and starts recording the unusual event on his cell phone as his neighbors begin to gather and watch. >> at that point, like we had already called the fire department. it seemed like most people were just kind of standing around, eyes to the sky. >> this is amazing. >> this is ridiculous. >> powerful jolts of electricity pulse through the tree, down to the ground, over and over again. >> i think it was like a 24,000 volt power line. i think that's what the energy company said. >> making matters worse, the wind pushes the large tree harder on to the surging power lines. >> now it's really heating up. >> looks further down, too. oh, my gosh! >> there's nothing the spectators can do as the fire moves down the center of the tree. >> i'm moving back a little bit. i can feel that. >> there's kind of the bzzz sound and

neal karlinsky, abc news bellingham washington. >>> when we come back here tonight, attention shoppersr retailer and the major change when it comes to returns. >>> and kraft pulling millions of baxes sboxes of macaroni and cheese tonight. >>> tonight here diane taking us to austria, germany, revealing the secrets on that mountain. botox® treats symptoms of leaking, going too often, and the strong sudden need to go. ask your urologist if botox® can help calm your bladder. ...and reduce your daily leakage episodes. the effects of botox® may spread hours to weeks after injection, causing serious symptoms. alert your doctor right away as difficulty swallowing speaking, breathing, eye problems loss of bladder control... ...or muscle weakness can be a sign of a life-threatening condition. don't take botox® if you can't empty your bladder or can't or won't self- catheterize if needed or have a urinary tract infection, or uti. side effects may include allergic reactions injection site pain, fatigue uti, painful urination,... ...and difficulty emptying your bladder. tell your doctor about your

neal karlinsky, abc news, bellingham, washington. >> scary stuff. >> the video is incredible. >> reallyarning signs, leaks, cracks, clunking, noises, like black sooty marks. yeah. look at that video. incredible. it preys on your fears. i worry sometimes this could happen. >> never think about it but there's the evidence, it happens. >>> when we come back, julie andrews and christopher plummer spill secrets to diane sawyer. >>> and madonna and justin bieber are spilling secrets as well on "ellen." "the skinny" is next. >> announcer: "world news now" continues after this from our abc st ♪ skinny so skinny ♪ >> time now for "the skinny." what a night it was last night. big revelations too from "the sound of music." >> a special edition of "20/20," "the sound of music," diane sawyer recreating the mountain scene. there she is. it took julie andrews a her crew an entire week to film that scene. they used a helicopter to do it. diane sawyer and her crew did it in 30 minutes, using a drone. man, times have changed. did you know that christopher plummer could do this? ♪ that's awesome. >> i had

. >>> plus a college >>> oh, that is a frightening explosion in a house in bellingham, washington. blew up here. the explosion was captured on the family's nanny cam. she saw the explosion and rushed home from work. the nanny and one child were in the house but we're happy to report they were not injured. the boyer has been in that house since the 1960s. can you imagine being at work watching your house and seeing that? >> nice sound with that. >> boom, clap but everything's oklahoma. >>> coming up this half hour your morningstar bucks run could mean a discussion about race. why some say the company has gone too far. >>> plus, could your rental car start watching you? hertz is defending its decision to install cameras inside some of its cars. ahead, how privacy laws struggle to keep up with changing technology. >>> but first time to show you some of this morning's headlines from around the globe. the "washington post" says the pentagon lost track of more than $500 million in weapons and equipment given to yemen. it's feared the arms could be seized by iranian-backed rebels or al qa