airport, starting may 5th. mayor bob scott made the announcement this morning. the new flight is in addition to the twice- daily flights to chicago o'hare. the flights will arrive from dallas forth worth at 12:20 p-m and depart from sioux gateway at 3:12. airport board president darrell jesse says the addition of the south- bound service validates the strength of the sioux city market and will give travelers easier access to southern and western destinations. all the flights are operated by the carrier's american eagle regional partner on 50-seat regional jets. tickets for the new dallas/fort worth flights go on sale starting tomorrow. 12 people are unaccounted for after two u.s. marine helicopters collided in mid-air about 2-and-a-half miles off the coast of hawaii overnight. witnesses reported that they heard a loud boom over the water and saw a big flare in the sky. officials say searchers spotted a fire and a debris field north off the island of

were hampering search efforts this morning. the coast guard is leading the search, coordinating with some navy and air force aircraft. a norfolk man's second attempt to appeal his murder conviction has been shot down. the nebraska supreme court today upheld the second degree murder conviction of 26-year old de'aris trice. trice was first convicted in 2013 for the stabbing death of 27- year-old timothy warren at a norfolk house party in december of 2010. but the state supreme court ordered a new trial, citing problems with jury instructions. trice was again found guilty in 2014 and given a prison sentence of 40 years to life. in his latest appeal, trice argued the trial court was wrong to allow transcripts of statements from some witnesses into evidence. he also said his sentence is excessive. the high court said it found no evidence that the trial court

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drumming up support for his wife, hillary's, campaign for president. let's go live to morninside college, where supporters have filled the olson student center to hear from the former president, who's scheduled to be there shortly. mister clinton has become a regular on the campaign trail for his wife in recent months. earlier this week, he told a crowd in new hampshire hillary is the best changemaker that he's ever known. clinton's visit comes 17 days before the iowa caucus and the latest poll shows his wife's lead over fellow democrat bernie sanders has shrunk to two percent in iowa. ktiv's tiffany lane is covering bill clinton's visit to sioux city. you can follow her on twitter and she'll bring us more tonight on news four. the gloves came off during last night's republican presidential debate. the field of candidates has narrowed and the contenders are growing increasingly more combative as the iowa caucus

cnn's reid binion reports.

endorsed many of the ideas that barack obama supports." (chris christie) "when you're a senator, what you get to do is just talk and talk and talk. when you're a governor, you're held accountable." but while attacking each other... ....they all shared a common, favorite target. (christie) "tuesday night i watched story time with barack obama." (rubio) "this president is undermining the constitutional basis of this government." (bush) "he is missing the whole point." i'm reid binion, reporting. >> walmart announced today it plans to close 269 stores worldwide by the end of this month. 154 of those are in the u.s.. and most will be smaller format "walmart express" stores. walmart instead plans to focus on super- centers, neighborhood markets and e-commerce. the company has not said which stores will be closed, so we don't know if any in siouxland will be affected. but almost all of the stores being closed in the u.s. are within 10 miles of another walmart location. ten-thousand pounds of car-crushing metal.

town for three heart-pounding, engine roaring shows. they're taking over the tyson events center. ktiv's sarah te slaa has been learning about the ins and outs of these monster machines.

donuts and wheelies. "these trucks can go almost 100 miles per hours, so it takes a lot of horse power to do that. that's why we use about 1,500 of it to get that much weight moving," says vinny venom, snakebite's driver. a monster truck typically weighs about 10,000 pounds. this one is a little bit more my size. nats each truck costs about a quarter of a million dollars. the tires alone are 6- grand each. but the rivalry between bigfoot and snakebite... priceless. "every good guy has a bad guy and bigfoot being the typical good guy, he needs somebody to try to slow him down," says venom. so if you want to check out bigfoot for yourself. you have three chances to do so this weekend. tonight at 7:30, tomorrow at 1:00 and 7:30 all at the tyson events center. in sioux city, sarah te slaa, ktiv news 4. >> there's also a free pit party two hours before each show. you can meet the drivers and see their monster trucks up close. meterologist ben dorenbach says indoors will be a good place to be this

very cold. stay tuned for the forecast, up next. it's degrees in spencer. she's always stood strong... ...to get the job done. hillary clinton. she stood up to china... ...and spoke out on women's rights... ...went toe to toe with russia on human rights. the drug and insurance companies spent millions against her... ...but hillary didn't quit until eight million children got health care. i've never been called a quitter and i won't quit on you. she's got what it takes to do the toughest job in the world. i'm hillary clinton and i approve this message. marco rubio. he ran for senate saying he opposed amnesty... then he flipped, and worked with liberal chuck schumer to co-author the path to citizenship bill. he threatened to vote against it. and then voted for it. he supported his own dream act and then he abandoned it. marco rubio.

jeb bush. he's a leader, so you always know where he stands. right to rise usa

ben, things are about to get cold!

we'll follow up yesterday's mild weather with another day just like it today with a bigger surge into the 30s (a few 40s too) and some decent sunshine! enjoy it because it's the last of them we'll sesefor a little while. as a cold front moves through tonight,t,e'll see a few light snow showers across the area as temperatures begin their decent into the teens and 20s and pretty much hold steady there tomorrow morning and fall a bit more tomorrow afternoon. conditions won't get much better this weekend with highs expected to be in the single digits and lower teens with lows falling to near 10 below zero saturday night with a few possible flurries. we'll bounce back a little bit early next week, but not enough to melt off more snow and ice. see graphics. >>

>> not a good day on wall street. the dow plunged more than 400 points in the opening minutes of trading. we'll check the numbers when we come back... and... a wind turbine unlike anything you've seen before. whwh's behind this new addition to the landscape near estherville, iowa.... when

wind turbines have become a common sight in northwest iowa over the past 15 or so years. but a very unique turbine has gone up near estherville. one that looks like no other. ktiv's tommie clark checked it out.

testing location for this," said iowa lakes community college president, valerie newhouse. chava wind installed the medium-scale turbine in december after picking out iowa as the perfect location for their prototype. "this is a great wind area that's why we're in iowa i mean we looked at different sites in texas and kansas, iowa beats them all. the annual sustained winds here are just awesome," said founder of chava wind, hagem ruff. the german company originally made the quieter, more aesthetically pleasing turbine for clients in japan. but, after creating it, they realized its potential. "experts say this vertical axis wind turbine right behind me would be a game changer, and it would not only benefit the students of iowa lakes, but the whole state of iowa." "the opportunity for us from a learning and potentially future work force development and training opportunity is huge," said iowa lakes community college director of sustainable energy resources and technologies,

the turbine is in its final installation stages-- with chava trimming and tuning the blades while the school develops its power curve. over the next 6 months they will look at atmospheric data while teaching students about energy production and future marketing possibilities. "this gives us another niche that we can make iowa a leader in because that's really the future. we have to take a look at new ways of supporting communities especially in outlying areas. this influences every person living in iowa that lives in a rural community," said iowa lakes community college director of sustainable energy resources and technologies, dan lutat. after further testing of the turbine's capabilities, chava hopes to certify it and, some day, begin marketing it. in emmetsburg, iowa...tommie clark...ktiv news 4. >>

>> stocks are sharply lower, led by steep declines in energy companies as the price oil takes another tumble. crude oil sank below $30 a barrel and is trading at its lowest level since 2003. the friday film feature's up next. and: "taking aim." it's how more than one- hundred students in sergeant bluff start every school day. it's an extra curricular activity that sharpens their skills, and pays off in

there are two democratic visions for regulating wall street. one says it's okay to take millions from big banks and then tell them what to do. my plan -- break up the big banks, close the tax loopholes, and make them pay their fair share. then we can expand health care to all, and provide universal college education. will they like me? no. will they begin to play by the rules if i'm president? you better believe it.

here's a live look at west lake okoboji from our okoboji skycam... ice cube reprises his role as a tough cop alongside kevin hart in "ride along 2", now in theaters. raphael seth has a preview, along with three other new flicks in this week's friday film feature.

along 2" is rated pg-13. "none of you have to go, but we are the only hope they have." heroes come out of the shadows in "13 hours: the secret soldiers of benghazi." this film is based on the 20-12 attack at an american compound in libya. six soldiers stationed nearby volunteered to aid consulate workers under fire...in a battle against hundreds of terrorists. "13 hours" is rated r. "why's he so rich?" "i never asked." nothing comes fofofree in "the benefactor." richard gere is a family friend trying to help dakota fanning after her parents are killed. but his money comes with strings attached..and fanning and her baby- daddy are tired of being puppets. "the benefactor" is in theaters and on- demand. "what can a bear like me do in a city like this? a polar bear heads south for the winter in "norm of the north." shiploads of people are moving to the arctic, disrupting the environment. so the misfit bear heads to the bibicity to convince humans to stay where they are. "norm of the north" is rated pg. that's the box office preview, raphael seth, nbc news. >> archery isn't just for summer

just a lesson in gym class either. as students pick up the bow, many find they're hitting a bullseye and it's a growing sport. ktiv's sarah te slaa shows us one siouxland team putting in the practice hours to score big in

freshman at sbl. some of these kids picked up at bow and arrow for the first time this year and have quite the eye for it. 7:20 "anybody can shoot a bow," says trace chrisman, a senior at sbl. "it's not that hard, but if you put enough work into it, you can become really, really good." the team is evenly split with boys and girls, all sizes, too, because archery is less about physical strength, and more about mental strength. 3:50 "you don't need to be physically strong or one of the popular people to do it. whoever wants to does,","ays delaney crowl, a junior at sbl. the stance, breathing, and concentration all has to come together in one instant to hit the target. nats-hit target it's a focus, they say, stays with them throughout their school day. 7:00 "oh, definitely. especially with tests and block out everyone else what they are doing," says chrisman. 1:55 "just taking deep breaths, calming yourself down before school, it really helps," says crowl. 4:30 "for the most part, anything that deals with archery also deals with the classroom focus concentration and always wanting to do better and always wanting to get a higher score," says pack. they're hitting a bullseye with skills they can use long after their school

nats- in sergeant bluff, iowa, sarah te slaa, ktiv news 4. >> siouxlanders will celebrate the legacy of dr. martin luther king.

collaboration with celebrating communities, naacp, and we are really excited to have that captured in the program that we're going to have on the 18th. if people would like to stop by where do they need to go and what time? it is 1421 geneva st that is on the west side of sioux city, iowa. for any more questions 712-255-0629 for any questions. it's at 7 anybody is welcome to stop by. yes, open to so much for stopping by and seeing us today. thank you for watching around siouxland. >>

thanks for joining us. marco rubio. he ran for senate saying he opposed amnesty... then he flipped, and worked with liberal chuck schumer to co-author the path to citizenship bill. he threatened to vote against it. and then voted for it. he supported his own dream act and then he abandoned it. marco rubio. just another washington politician you can't trust. jeb bush. he's a leader, so you always know where he stands. right to rise usa