>> this is the iconic blue betty coat. good evening and we begin here on a sunday night with yet another weather warning for millions of americans. dangerous and potentially deadly weather is on the move right now. tornado watches are up in two states. that number expected to grow. and now the system is moving from west to east gathering new strength. you can see right there in the(& circle where the weather is most severe right now and tonight tornado watches just going up in texas and oklahoma. you can see the counties in red. we're getting a first picture out of arizona. heavy snow around flagstaff. a main highway, interstate 17 shut down by the blinding storm. so let's bring in ginger zee tracking it all weekend long. you could say we could be in for 4 hours of dangerous storms. >> we are in the heart of it. next 24 hours will be rocky. where we have to watch, wichita to del rio and a little bit of hail and damaging wind possibilities over there near cincinnati. but this is just tonight. i think by tomorrow the threat not only intensifies but it also grows to a larger area, more people affected. des moines, kansas city, to houston all have possibilities of isolated tornadoes, damaging winds and hail. >> i know you traveled this evening to oklahoma, northern texas, that's where you believe it to be more severe. >>ing looking for the most tornado activity to happen in southeast oklahoma and northeast texas. of course we'll be helping in the warning process. >> safe travels. we turn next to what we're learning about the american soldier accused of murdering 16 afghan civilians, mothers and children and tonight sergeant robert bales sits in solitary confinement. we have our earliest glimpse of him yet. 9 years old posing for his baseball card all american describing him as a little boy. neal karlinsky on the story for us again tonight. >> reporter: tonight sergeant robert bales' attorneys are arriving at ft. leavenworth in kansas and plan to meet with him face to face for the first time. he is being kept in a cell very much like this one in solitary confinement. alone to ponder the alleged murders of 16 afghan civilians. the possible sentence, either life behind bars or the death penalty. >> i don't think it's a slam dunk case, notwithstanding the number of victims. the government may well have some very, very substantial problems in investigating this case and bringing it to trial. >> reporter: one problem because of cultural barriers no law for hard evidence ha can be tied to a weapon. another eyewitness testimony cannot come from a deposition. villagers who witnessed the massacre will be required to testify in person in a u.s. military court. the soldiers then tell abc news in the family's first comment he was raised by a very loving family and that she has been left broken hearted by the news. the defense will likely focus on the toll of prolonged combat pushing a good soldier to the edge. >> posttraumatic stress disorder could be a mitigating circumstance that could cause a jury to determine that the death penalty is not appropriate. >> reporter: getting an acquittal by reason of insanity and blaming it on posttraumatic stress is almost unheard of in military court but bales as a creative high-profile legal team and this will not likely be a typical case. david. >> neal karlinsky tonight, thanks. there is new information coming out of london's ftse in th orlando. we told you about the teenager who took a break from watching the game, went out for candy and never came back. now those 911 calls revealing the gunshots fired by a man on the neighborhood watch. and tonight abc's matt gutman learned that man on neighborhood patrol had a habit of calling 911. >> reporter: tonight we're learning more about the man responsible for this. the shooting death of travon martin, unarmed. george zimmerman was not tested for drugs or alcohol even though it's standard in most homicide investigations. and law enforcement experts listening to these tapes -- >> this guy looks like he's up to no good on or drugs. >> reporter: tell us it was cinematographerman, not martin who sounded intoxicated. it's the latest in a string of possible missteps by police that night. including dismissing eyewitness accounts and failing to fully investigate the background. cinematographerman has been charged with no crime. he reportedly wanted to be a police officer. calling 911 50 times over the last year mostly false alarms. on february 25th he took matters into his own hands. >> [ bleep ] they always get away. >> are you following him. >> yeah. >> we don't need you to do that. >> reporter: after he shot and killed the teenager who went out for skittles he claimed self-defense. >> do you think his fate would have been the same had he been white? >> nope. i don't think he would have even been followed if he was a white kid. >> reporter: and tonight martin's family calling on the fbi to take over what they say is a botched investigation. matt gutman, abc news, miami. >> our thanks to matt. we'll turn now to children targeted on playgrounds and in school hallways across this country. the problem of bullying. tonight president obama is delivering a new message on the cartoon network aimed straight at children, both the bullied and the ones doing it and as words come on the eve of a new documentary with the portrait of pain felt by so many of our yog here's abc's tan rivero. >> the images in the new film "bully" are difficult to watch but even harder to live through. tonight president obama lends his voice to the cause on the cartoon network's own anti-bullying documentary "speak up." >> it's wrong, destructive and we can prevent it. everyone has to take action against bullying. >> reporter: it's a cause he's championed before. hosting the first white house conference on bullying last year and joining other celebrities in a message of support to young people facing harassment. >> every day it gets better. >> it will get better for you. >> it gets so much better. >> things will get easier. people's minds will change. >> reporter: a movement that has grown in the wake of several suicides. like that of college student tyler clementi after learning his roommate captured his sexual encounter with another man on a webcam. >> guilty. >> guilty. >> guilty. >> reporter: that roommate dharun ravi found guilty friday. bullying appears to be on the rise. an estimated 13 million students will be bullied this year. tragic suicides along with unflinching depictions of bullying in action are forcing a national conversation. same is long overdue. and right now there's a big push to get the rating of the documentary lowered to pg-13 so more kids can see it. on tuesday there is a big social media push on twitter. there's a town hall there. >> so many voices now leading to the effort of stopping bullying in the country. tanya, thank you. we turn now to the race for president. it's your voice your vote tonight and puerto rico, they are casting ballots in the primary today. the candidates already eyeing the next big contest. mitt romney hit the trail in illinois. rick santorum spent the day in louisiana which comes after so we want to bring in david kerley and, david, what are the lines we know romney uses about his opponent rick santorum he's an economic lightweight and on abc's "this week" santorum got a chance to respond. i thought we would listen to both. >> we won't be successful in replacing an economic lightweight if we nominate him and i'm a heavyweight. i know how the economy works and i'll get it working for the american people because i care about the american people. >> are you an economic lightweight. >> for mitt romney to say he's the economic heavyweight. this is a man who doesn't understand, you know, conservative principles. conservatives don't go out and say i'll create jobs and change the economy. i'm going to manage the economy. just the opposite. what we believe in is getting government out of the way, creating opportunity and let the private sector do these things. >> so, david, he answered within an attack of his own. >> and went an to say that basically mitt romney can't connect with the voters, therefore he is not the guy you should actually elect. he is not the one that can represent republicans. this is the thing that santorum has seen in the past couple of weeks connecting with the voters and basically saying, listen, if romney has to tell you that i know what you feel, then he's not doing the job that republicans need him to do. >> but back to the issue of being called an economic lightweight, how did he answer that. >> he came up with another allegation that mitt romney will have to answer as well. he said romney did a great job in the private sector making money for capitalism himself but as governor he was 47 out of 50 states in creating jobs. is that someone you want to be president? the republicans going at hit hot and heavy. >> david kerley in washington, thank you. also out of d.c. a headline that caught our eye with so many passengers tired of being told they have to turn off their ipads and kindle before the plane takes off federal authorities say they will take a new look at whether they do interfere with the cockpit and whether passengers should be allowed to use them during cakeoff and landing. the faa says it will now take a quote fresh look at the use of peds, other than cell phones on aircraft. in the uk they have been watching her but yet to hear from her. princess kate delivers her first big speech. first time we heard from another princess, it brings back memories. >> reporter: it's been an eventful weekend for the duchess passing out shamrocks to the guards. one guard literally passed out. but tomorrow, the nerves will be even greater. we will get to hear her first ever public address at a hospice for kids. >> everyone is silent and listening to every single word you're saying and will be nerve-racking for her. >> reporter: was certainly nerve-racking for diana when she was in the spotlight speaking for the first time in 1981 and she had to do it in welsh. [ speaking a foreign language ] >> reporter: the speech, a simple thank you to her welsh subjects which was met with a standing ovation. and a more relaxed diana. but official addresses can be daunting as it was for stuttering george vi in "the king's speech." so will kate wow her audience? >> i'm sure it will go well. like everything she's done she's shown herself to be more than capable. >> reporter: for capable kate it will be a major milestone, another notch in her royal belt. the exact subject of the speech hasn't been made public but one reporter told us it's going to be brief and beautifully written and, david, we understand the duchess has been practicing in front of family, friends and a mirror. >> she is human, after all. lama hasan in lon dan, thanks. back here in this country now and to what could be a medical breakthrough for so many people hoping to make their memories last longer. even after a loved one is diagnosed with alzheimer's. abc's linsey davis with the technique sparking the mind. >> reporter: it has long been the holy grail for doctors treating alzheimer's disease, find a way to stop the rapid mental decline that is the hallmark of this debilitating disease. now, a new clinical trial could just prove that possible using a novel approach that could awaken memory circuits in the brain. it's called deep brain stimulation, and it has already shown promise in a few canadian patients with early alzheimer's. >> right now we're stimulating. >> reporter: four years ago, robert linton had two electrodes implanted in the memory area of the brain. every day since a battery implanted in his chest has sent his brain more than 100 electrical impulses a second. that treatment has put the brakes on robert's alzheimer's allowing him to lead a normal life. he's driving, doing crossword puzzles, exercising, and perhaps most importantly, remembering. >> if i can't remember something, if i just pause for one, two or three seconds, it pops in. >> reporter: his doctor says robert's brain scans show the difference. >> although the lights are out here, there is someone home. we are able to turn the brain back on. there are circuits down that can reignite and reactivate the circuits and will that lead to an improvement. >> reporter: all questions that can only be answered by testing more patients. for now robert and his wife barb have reason to hope. >> with the diagnosis of alzheimer's you don't foe what the future will be and now i think maybe we have more of a future. >> so great to see robert and his wife getting more quality time together than they thought they would facing alzheimer's. i'm curious. is there hope for others. >> there is. the fda approved a larger study that will take place of john hopkins. 50 more people. >> this stimulation, we've seen it used before in, what, depression, parkinson's. >> we've seen it work and be effective in those cases and know it's safe. it just could be an effective treatment for alzheimer's disease. >> great promise, linsey, thank you. still ahead here on "world news" this sunday night, the bill collectors going to extreme lengths to track you down. but how far is too far? listen to this. >> are you going to pay this bill or am i going to have to kill you. >> tonight the collectors that threaten your pelt dog. what's really going on. at the very end tonight we take you right back to the '60s on the set of cat mad men." don draper's hi-fi and go inside peggy's dress and betty draper on what men and women are truly looking for. 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here's lisa stark. >> reporter: the letter that arrived in the mail stunned tim bond. >> i received a certified letter that said i was being sued for over $7,000. just felt kind of suffocated and trapped instantly. >> reporter: bond wasn't even sure he owed the credit card debt. even if he did it was 14 years past due. what did people need to know about older debts. >> there may be a state statute that limits the collector's ability to sue on the debts. >> reporter: that means they can't force you legally to pay it. but that didn't stop this company which broke the law by threatening lawsuits on ex-irpoohed debt and reporting those old debts to credit agencies. the company has paid a $2.5 million fine to the government. even as it denies any wrongdoing. >> what are you? are you an attorney or what. >> i'm the guy who is gonna end your life. >> reporter: threats from debt collectors with terrifying calls like these from other companies. >> are you going to pay this bill or not or am i going to have to kill you. we're going to have your dog arrested and shoot him. >> reporter: these are illegal too. for older debts the amount of time they can sue for payment varies state by state anywhere from 2 to 15 years but beware. why not agree to pay a little bit of the debt and get them off your back. >> in most states if you pay a little it restarts the clock. >> reporter: that means that old debt is suddenly reactivated and you can face a lawsuit after all. tim bond didn't fall for that. instead enlisting help from government consumer fraud officials. it worked. the company backed off. lisa stark, abc news, washington. >> thanks so much. when we come back we have the proof right here, grandparents, forever young. you've got to see this. g and tug have given way to sleeping. where sleepless nights yield to restful sleep. and lunesta can help you get there, like it has for so many people before. when taking lunesta, don't drive or operate machinery until you feel fully awake. walking, eating, driving, or engaging in other activities while asleep, without remembering it the next day, have been reported. abnormal behaviors may include aggressiveness, agitation, hallucinations or confusion. in depressed patients, worsening of depression, including risk of suicide, may occur. alcohol may increase these risks. allergic reactions, such as tongue or throat swelling, occur rarely and may be fatal. a j3 and morning drowsiness. zziness ask your doctor if lunesta is right for you. then get lunesta for $0 at lunesta.com. there's a land of restful sleep. we can help you go there on the wings of lunesta. then i found new pronutrients omega-3. it's from centrum. it's a smaller minigel. with two of the best omegas to support my heart, brain and eyes. new pronutrients from centrum. tonight here a new glimpse at ronald reagan the artist. it turns out he drew these during a 1981 summit in canada and include a self-portrait. drawings of several other people, a torso, no word if it's his own and british prime minister margaret thatcher picked it up and saved it. not exactly grandparents gone wild but gone viral. they're forever young at heart. grandparents discover photo booth that lets you distort images on your own, more than 7,000 people watch them have fun. when we come back on the set of "mad men," the american nostalgia we found in every corner of the set. okay, team! after age 40, we can start losing muscle -- 8% every 10 years. wow. wow. but you can help fight muscle loss with exercise and ensure muscle health. i've got revigor. what's revigor? 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