nbc's kevin tibbles starts us off from there tonight. good evening. >> brian, 2013 is barely a month old and already 42 murders in the city of chicago. the latest has galvanized this city into taking action. >> no one gets a pass. >> reporter: today, chicago city officials went on the offensive. taking aim at gun violence by calling for background checks on gun buyers. >> loss of any child, in any community, in this city, is a loss to the entire city. reporter: moving 200 more officers from behind their desks to the streets. >> if i have to put a policeman here, 24 hours a day, 7 days a week, 365, we're going to make a point that this territory belongs to the community. >> i'm hadiya, year 2015. >> reporter: the victims have names and families. 15-year-old honor student, hadiya pendelton, has become the latest face of violence in this city. in sixth grade, she took part in an anti gang video. >> your job is to say no to gangs and yes to a great future. >> reporter: despite bylaws that prohibit gunshots within city limits, more than any o

nbc's kevin tibbles found out during a recent trip to minneapolis. >> reporter: a cavernous christmaslid ice, not the north pole but in a parking lot next to the mall of america in minneapolis. kids must love it in here. >> yeah, they do. they do. it's like a big playground of ice. >> reporter: the ornate cra craftsmanship, californian with ice in his veins. he has been out in the elements no matter how frigid, turning single icicles into works of beauty. there's no wood, no concrete, no steel involved. >> we set it up and run water and mother nature does the growing during the nighttime. >> first he has to groet icicles. so he has an ice farm, of course. >> they come off nicely off these racks. that's exactly what we want. >> getting down is even icier. latest crop has been transported to the top where, one by one, christiansen builds his castle. he will have frozen some 4 million gallons of water by the time this is done and that is a lot of ice koocubes. >> some would prefer just to have the ice in their glass. >> we could fill a lot of glasses. >> reporter: how come it's all blue?

>> even though canada claims to not know why sergeant tibbles has detained him, he soon let's slip todoes know. >> how do you know it's from compton? because, that's the only thing it could be for. you guys can't save him forever, all right? >> save him from what? >> what do you mean save him from what? don't play dumb. you know what he's doing around here. he's just a snitch, you know [ bleep ]. try to do something, help him get out of some trouble, you know, and he's saying like i did something wrong to him. i didn't never do nothing wrong to him. he had his mom take copies of the money order receipts that he sent me. right? he sent me a money order receipt because i got him out of some trouble. >> i will have to go up front. i will have to write a conduct report for threatening and then take it to the captain's office. the lieutenant will write him up some paperwork, which means he will be on confinement. >> coming up -- >> i'm here to tell you guys i did not do what they're accusing me of doing. >> steven weaver argues his case to get out of ad-seg. >> i didn't put a hit out on th

>> kevin tibbles in chicago. thanks so much, kevin. >>> in los angeles, an urgent manhunt for a cop killer is coming up empty. detectives work around the clock to try to track down leads. accused of killing three people, christopher dorner has a million dollar reward on his head. warnings have been posted along major roads in the area. >>> hackers broke into the emergency alert system in a local station and this is what unsuspecting viewers heard. >> authorities in your area have reported that the bodies of the dead are rising from their graves and attacking the living. follow the messages on screen that will be updated as information becomes available. do not attempt to approach or apprehend these bodies as they are considered extremely dangerous. >> the network is investigating the hack and denies that there is any emergency or zombie apocalypse in case you had any doubt. still terrifying, as you can imagine. >> not funny. >> i know. unbelievable. >> especially if you're a werewolf or vampire. it can't be good.

nbc's kevin tibbles found out during a recent trip to minneapolis. >> reporter: a cavernous christmasking lot next to the mall of america in minneapolis. kids must love it in here. >> yeah, they do. they do. it's like a big playground of ice. >> reporter: the ornate cra craftsmanship, californian with ice in his veins. he has been out in the elements no matter how frigid, turning single icicles into works of beauty. there's no wood, no concrete, no steel involved. >> we set it up and run water and mother nature does the growing during the nighttime. >> first he has to groet icicles. so he has an ice farm, of course. >> they come off nicely off these racks. that's exactly what we want. >> getting down is even icier. latest crop has been transported to the top where, one by one, christiansen builds his castle. he will have frozen some 4 million gallons of water by the time this is done and that is a lot of ice koocubes. >> some would prefer just to have the ice in their glass. >> we could fill a lot of glasses. >> reporter: how come it's all blue? >> the thicker the ice, the bluer it ge

nbc's kevin tibbles has details on this story.> many am minnesota are asking how could this slip through the cracks, a young man who already killed his mother, now found with an arsenal along with something as equally disturbing. >> this is a desert eagle, semi automatic. >> reporter: stockpile of guns with immense fire power all seized in january from home of 32-year-old christian philip overender, minneapolis. >> pretty concerned and i think everyone was quite scared, to be honest with you. >> reporter: why were neighbors scared? back in 1995, just then 14, he killed his mother, mary, in the same house with a gun. >> it certainly rang a bell with me from that. >> reporter: sheriff jim olsen was a young detective back then and when he heard that oberender posted guns on facebook, his memory told him to be concerned. >> he should not have guns on facebook and he should -- he should just not have guns. >> reporter: deemed mentally ill and dangerous by the courts and committed to a state psychiatric hospital for his mother's murder.

the tibbles knocked over the arch on the north gate! stop! stop! we worked so hard! no! stop!ade it! boys and girls, if you'll please go over to the blue carpet we have a very special guest. this is captain kamble, and he has brought a friend with him. morning, kids! say hello to ringo. he's a real live koala. kids: ooh! wow! it's a koala. right here in class. what do we do? we must be strong. who wants to pet him? me! me! me! i think... i think i'm starting to cave. emily! we only have an hour left! we're this close to finishing! (crashing) (kids gasp) (gasps) yes! yes! can we pet him? please? can we? can we? of course you can. aw... aw... ms. morgan: and then afterwards, you can clean up those blocks. ♪ and now: i thought you might like to see how i draw... (yelling) we start with this large "u" shape and we'll do sort of a wavy line for the top of her hair, two circles for her eyes then we'll add the dots. and two little lines for her nostrils and a nice big curve for a smile. and now we'll add her hair and her ears. and there you have d.w. announcer: it's "curious george."

i'm done teaching tibbles. fine, we'll just teach ourselves.o what they do. okay, i'll pretend to be grandma. first, you have to pull my chair out for me, sweetie. ugh! not that far, timmy. oh. sorry, grandma. great. now pour me some juice young man. into a cup, timmy. oh, yeah. (gulping) aah... now ask me what i want to eat. what would you like to eat, grandma? we have cookies. would you like them mashed or crumbled? mashed, please. they're not quite mashed enough. let me help you, timmy. oh, dear. you got some on your cheek, grandma. let me wipe it off for you. (laughing) ow! (groans) quit it! come on. stop pushing me! they said they needed to practice their table manners on someone so they came to me. don't sweat it, little bro. i'll keep them in line. (arguing continues) no, let me! (grunting) you first, james. uh, thanks. here's your napkin. i'll have a root beer, no ice, no straw, please. what about for you, gentlemen? ice cream. you scream. we all scream we all scream for ice cream! for ice cream! molly: okay we're out of here. but... no

kevin tibbles is at the 2013 chicago auto show. this is a dream come true. i love that thing.here is no better way to beat the gray, february blues than a trip to see all the colors here at the chicago auto show. i mean, check it out. it's the largest, longest-running auto show in no north mencamerica. kick a few tires and dream. high-quality imports, stylish domestics. the tiny through the tremendous. all here for the public to savor and, most importantly, discover. ford's innovation for the american family? wave your foot to open the back cargo door. >> voila. what prevents some random person from coming up and opening this door? >> you do have to have the key faub on you. >> reporter: made in the u.s.a. and available at the end of the year. this is where you plug in the cadillac. the knock on volkswagen beetle was that only women liked its rounded shape. this does not look like your dead's beetle. now it's sleeked down and souped up. so it's really shnell. >> it can be. >> it's swell and shnell. and that means fast. test out the latest four-wheel drives. i asked the folks a