Oklahoma, was charged with manslaughter in what he says was an act of a crime. The victim was 44 years old. Elaine quijano has the latest. Reporter in the moments before eric harris was shot on april 11th, tulsa sheriffs deputies say they were conducting a sting operation, trying buy a gun from a convicted felon. But when Police Vehicles pulled up, harris ran. Stop reporter a body camera on one of the deputies captured the pursuit. Among the officer chasing harris was 7 the 3yearold volunteer reserve deputy bob bates. Bates can be heard yelling taser just before a shot was fired. According to sheriffs investigators, bates thought he pulled his taser instead of his gun. Immediately afterwards, you hear him apologize. I shot him. Im sorry. Reporter as harris laid bleeding, he complained of being unable to breathe. Im losing my breath. Reporter no one replied. Bates had previously worked for the saul is a Police Department in one year from 1964 to 1965. He became a reserve deputy at the Sheriffs Office in 200. At first the department defended him, saying he made a mistake in the heat of the moment. But the District Attorney disagreed, charging bates with manslaughter. Dan smolen is the attorney for the harris family. Everyone wants the believe law enforcement. Everyone wants to live in a world where you feel protected by law enforcement. The problem is if that has become so mutated over time. Reporter an draw harris is the victims brother. He was loving. He was caring. And he was my brother that ill never see again until i see him in heaven. Reporter according to family members, harris was unarmed when he was shot. Robber beats attorney said the following in response to the charges, we feel the evidence strongly shows this was a death or homicide by accident or misfortune which under the statute is excusable homicide. There has not been any challenge to the statements made by bates voicing his intention to phase. Scott, if he is convicted, bates could receive up to four years in prison. Pelley elaine thanks very much inch another Controversial Police shooting, we heard new audio today of South CarolinaPolice OfficerMichael Slager minutes after he fatally shot walter scott, who was running away from a traffic stop. The first voice youre about to hear is a politician supervisor advising slager what to do next. Your adrenaline is pumping. Its pumping. Oh yeah,. Oh, yeah. Pelley it was after a chase and a struggle that slager shot the unarmed scott in the back. Slager was fired last week, charged with murder and remains in jail tonight. Today four exblackwater security security guards were sentenced to long prison terms for a deadly shooting in baghdad eight years ago. The episode caused an International Uproar and raised questions about the u. S. Governments use of private security guards in a war zone. Heres david martin. Reporter one by one the four blackwater guards their legs shackled, stood before a packed courtroom. Judge royce lamberth, his voice at one point breaking with emotion, pronounced their sentences. Life for nicholas slattern, who had been convicted of firstdegree murder for firing the first shots in the 2007 shooting, which left 14 unarmed iraqi civilians dead. 30 years each for Paul Slough Evan Liberty and dustin heard all of whom had been convicted of manslaughter. The courtroom filled with 100 of their supporters, gasped at the life sentence, but none of the defendants showed any visible reaction. The sentences, which were the minimum required by law following convictions by a jury last october were handed down after hearing statements from five of the iraqi victims including emotional testimony from the family of a nineyearold boy who was killed. Whats the difference between these criminals and terrorists, the father asked in halting english. Video monitors showed photos of the dead and pictures of the cars shot up by the blackwater guards. Lawyers for the defendants asked the judge for mercy arguing the mandatory sentences were intended for drug dealers and gang members not security guards assigned to protect a state department convoy in the middle of a wartorn city. But judge lamberth responded based on the seriousness of the crimes, i find the penalty is not excessive. Choking up, the judge said its clear that these fine young member just panicked, but he added, they were entrusted with Deadly Weapons and their conduct cannot be condoned. Pelley david martin at the peg for us tonight. David, thank you. The u. S. Has fired off an angry note to russia over a near miss involving a russian fighter and an american spy plane. The pentagon says the reconnaissance plane was in International Air space last tuesday north of poland. The u. S. Says the russian fighter screamed up from the rear and spun two barrel rolls over the american plane. Well, there are only 82 weeks left until the president ial election, and the field is filling up fast. This evening republican senator marco rubio said he is in, and Hillary Clinton stepped on to a trail that she has traveled before, this time shes the overwhelming favorite for the democratic nomination. Tonight shes headed to iowa. Our nancy cordes beat her there. Reporter the only clinton sighting came at a chipotle in ohio today where security video captured her ordering a burrito bowl, your standard road trip fare. Im hitting the road to earn your vote. Because its your time, and i hope youll join me on this journey. Reporter she may be the democratic frontrunner, but clinton still needs to drum up the kind of enthusiasm that led barack obama to a firstplace finish in the Iowa Caucuses and eventually to the white house. Theres a number of undecided. Theres a number. Reporter bartender Kimberly Boggus leads a group of obama volunteers in beaverdale iowa. They worked so hard to get him reelected they were nicknamed obamadale. We sat down with five of them. At this point do you all have the same kind of passion for Hillary Clinton that you had for the president . No. No. No. Reporter why not . I think she has the prove herself. I already know shes very qualified. I know that shes an intelligent person, but i just wanted to meet her because thats how iowans are. We want to know our neighbors. We want to know our people we go to church with. We want to know our president. Reporter here in iowa they take underdogs seriously. President obama was one. When former Maryland GovernorMartin Omalley visited iowa last week, all five went to see him speak and sing. Do you want more Democratic Candidates in the field . Yes. Yes. Reporter you would like that . The Democratic Party does better when we have competitive caucuses. Reporter clinton kicked off her last campaign with a big rally here in des moines, but this time shes going small very small. The clinton caravan will roll into monticello iowa, tomorrow, population 3,800, where she will hold a round table, scott, with Community College students and educators. Pelley nancy, thank you. Now to the rubio campaign. Manuel bojorquez was there when the freshman senator from florida made his announcement. I believe our very identity as an exceptional nation is at stake and i can make a difference as president. Reporter marco rubio launched his campaign from miamis Freedom Tower the first stop for thousands of cuban exiles during the 60s and 70s. The son of cuban immigrants themselves, rubio vowed to protect the American Dreams they sought. I live in an exceptional country where the son of a bartender and maid can have the same dreams and the same future as those who come from power and privilege. Reporter rubio was elected to the senate in 2010 at just age 39 par of a tea party wave. A Foreign Policy hawk, hes been sharply critical of president obamas policies on isis iran and especially cuba. But some conservatives have criticized rubios support of a 2013 comprehensive Immigration Reform bill that ultimately failed. Rubio says he now favors a piecemeal approach to immigration with Border Security at as the top priority. On the come pain trail he will call for an overhaul of the tax code. His plan low terse Corporate Tax rate, eliminates the estate tax and reaches out to middleclass voters by increasing the child tax credit. Rubios challenges for securing the nomination include an expected run by his mentor former Florida Governor jeb bush. Scott, rubio has positioned himself as a fresh face, an alternative to establishment candidates like bush and Hillary Clinton. Pelley manuel, thanks very much. John dickerson is our cbs news political director. We announced yesterday hell be the new an consider of face the nation beginning this summer. Congratulations, john. Thank you scott. Pelley john, does secretary clinton draw a serious opponent for the democratic nomination . Reporter the way it looks now, Hillary Clinton if she makes it to the convention, will face the least amount of opposition since any Party Candidate who wasnt already an incumbent since 1908. Martin omalley, the former governor of maryland is running and doing all the things you do to run but people rate his chances as slim. Joe biden would like to run but hes not doing the work. Hillary clinton is a woman and she can raise a lot of money. When i asked democratic strategists, what do you think the chances are. They say anything can happen for politics. Then they reach fornys cal and religious to say how unlikely it is that she be beaten. Pelley history is not kind to any party that tries to have three terms in the white house in a row. Since 1951 one party has had three terms in a row that was reagan and bush, but if history is not on the democratic side, there are some things that are and if you look at the electoral map, that race to 270 that well become obsessed with in a year and a half the democrats start with a lot. They have a lot of big states, not a lock. Of course they have a lot of big states, almost twice as many electoral votes that are sort of already in the democratic column than republicans have. The chairman of the Republican Party was asked by Bob Schieffer on face the nation this weekend about that electoral advantage democrats have. He said democrats just have to be good. Republicans to win the presidency have to be perfect. Pelley there are three republicans in the race right now. Whats that field going to look like . How many will there be . Reporter the most reboast field ever. Cover, senator politically powerful and popular people. Theyre all going to have a lot of money. Its going to be quite a round of bumper cars. Pelley and next week there will be only 81 weeks until election day. John dickerson, thank you so much. Most of those candidates will be flying on charters, and this may be one reason. Theres a new report out today based on government figures that confirms that everything that passengers hate about flying is getting worse. Heres transportation correspondent jeff pegues. Reporter while Airline Profits soared last year, passengers didnt share in the good times. Thats according to this years Airline Quality ratings survey, which concluded that Customer Service is getting worse. The report found that while most bags made it to their destinations, more than two million were mishandled last year, thats up 13 from the year before. In passenger complaints rose 22 to just over 11,000. Brent bowen is coauthor of the report. What about ontime performance, is it bet center ontime performance is worse. Reporter by a lot . By a significant amount. Thats a management decision on the frequency of flights and scheduling. Thats the numberone thing a passenger wants is to get to their destination on time. If they dont theyre going to file a complaint. Reporter sky west, express jet and envoy received the rowest overall rating, virgin america, Hawaiian Airlines and delta earned the highest. This year a bit of good news is delta climbed its way back up after a decline when they merge with northwest. Reporter the Airline Industry as a whole is going through a wave of consolidation, but airlines for america, an industry representative, says the merge eskers have allowed airlines to focus on improving fleets and improving all stages of travel. Carriers are increasing air Service Levels which will benefit customers. Envoy Airlines Says it is working on system upgrades, scott. Prior the last year Airline Quality ratings were actually on the rise. Now according to this reports authors, were entering a period of decline. Pelley jeff pegues, thank you very much, jeff. Not a quality landing for a United Airlines 737. It skidded off the runway in houston this morning. Heavy rain may have been factor. The landing gear ended up stuck but nobody was hurt. Several inches of rain fell in fort worth where drivers abandoned their cars and theres more rain in the forecast. A sevenyearold had dozens of seizures a day until he was given marijuana. And the work was pure drudgery, but you cant beat the scenery. When the cbs evening news continues. Ro s of life. If you have high blood sugar ask your doctor about farxiga. Its a different kind of medicine that works by removing some sugar from your body. Along with diet and exercise farxiga helps lower blood sugar in adults with type 2 diabetes. With one pill a day, farxiga helps lower your a1c. And, although its not a weightloss or bloodpressure drug farxiga may help you lose weight and may even lower Blood Pressure when used with certain diabetes medicines. Do not take if allergic to farxiga or its ingredients. Symptoms of a serious allergic reaction include rash, swelling, or difficulty breathing or swallowing. If you have any of these symptoms stop taking farxiga and seek medical help right away. Do not take farxiga if you have severe kidney problems, are on dialysis, or have bladder cancer. Tell your doctor right away if you have blood or red color in your urine or pain while you urinate. Farxiga can cause serious side effects including dehydration, genital yeast infections in women and men, low blood sugar, kidney problems, and increased bad cholesterol. Common side effects include urinary Tract Infections changes in urination and runny nose. Do the walk of life yeah, you do the walk of life need to lower your blood sugar . Ask your doctor about farxiga. And visit our website to learn how you may be able to get every month free. Incredible ive been claritin clear for ten days. When your allergy symptoms start, doctors recommend taking one claritin every day of your allergy season for continuous relief. With powerful 24hour, nondrowsy claritin live claritin clear. Every day. [clicking sounds] its so shiny. I know mommy. But its time to let the new kitchen get some sleep. If you want to choose wisely choose angies list. With indepth reviews, an exclusive scoring system and real people standing by to help, you can get a finished project that youll love. Pretty. Call, click or download the app for free today. To you, theyre more than just a pet. So protect them. With k9 advantix® ii. Its broadspectrum protection k ills fleas ticks and mosquitoes too. K9 advantix® ii. For the love of dog™. Pelley a study out today found a new treatment for epilepsy is showing great promise. It uses an extract of marijuana. Heres dr. Jon lapook. Youre going to go to school. Reporter from age one, hank kovach suffered from severe epilepsy that could not be controlled with medicine. His mother megan says in one day he could have more than 25 seizures. I thought he was playing in the other room. He was not playing in the other room. He was convulsing, turning blue, and thats when i thought i lost him. Hes been such a good boy getting him all hooked up. Reporter last summer she eagerly enrolled her son in a small trial designed to see if medical marijuana could help. Twice a day hank receives a heroin liquid extract called epidolex. The medicine does not contain thc, the ingredient that can cause you forback anxiety and pair nowa. Megan says the change has been dramatic. We instantly saw results. He was smiling again. We noticed a decrease in seizures. He was able to train. At this point he was able to gain cognitive skills. Reporter 137 children and young adult, average age 11, were given the drug. After 12 weeks, parents reported the number of seizures declined 45 to 50 . Dr. Linda laux of the Childrens Hospital in chicago is one of the researchers. Some of the kids clearly became more verbal better coordination. I had one child who started walking while they were using the medication. Reporter hanks epilepsy was so severe, at age seven he still cannot speak, but hes able to attend school and has not had a sieger in months. My goal for him is to hear his voice to hear him talk. We just want him to be happy. Reporter its been known since the early 70 has the the active ingredient hank received can block seizures in animals but how it works is unclear. What is clear scott much more research is needed, especially blah placebocontrolled trials. Pelley promising news. Jon, thanks for that. Two survivors of the boston bombing help open the season at fenway inning just a moment. Wow thats a fourcylinder . I thought it was a six. I definitely feel the ecoboost in the ford escape. Thats like a sports car. I just opened my trunk with my foot. I prefer, without a doubt, the escape over the crv. Take the ecoboost challenge at your ford dealer. For a limitedtime get an escape with up to twothousand total cash back plus sevenfifty conquest cash with a qualifying competitive vehicle in your house. Ugh. Heartburn. Did someone say burn . Try alka seltzer reliefchews. They work just as fast and are proven to taste better than tums smoothies assorted fruit. Mmm. Amazing. Yeah, i get that a lot. Alka seltzer heartburn reliefchews. Enjoy the relief. Okay buddy whats your favorite kind of cheerios . Honey nut. But. Chocolate is my other favorite. But Apple Cinnamon is my favorite too. And fruity. Oh yeah, and frosted okay, but. Whats youre most favorite of all . Hmm. The kind i have with you. Me too. Pelley we have an update on our story about the socalled beijing five. Today under international pressure, china set the women free. They were jailed last month after singing on the subway and dressing up as bloodstained brides to raise awareness about Sexual Harassment and domestic violence. Secretary of state john kerry was among those who took up the cause. Their release is conditional though. They could face charges later. Tonight we have a rare look at a space walk from the astronauts point of view. In february terry virts put a camera on his helmet and started recording as he and Barry Wilmore did some construction at the space station. Its a wonder they got anything done with a view like that. In boston it was opening day at fenway park. Jane richard was in the choir that sang the national anthem. She lost a leg in the marathon bombing. Her eightyearold brother martin was killed. Another brother henry handed the baseball to patriots star tom brady who threw out the ceremonial first pitch. It bounced, but the red sox won 94. The writings of the genius portrayed in the imitation gang sells for real money next. And the wolf was huffing and puffing. Kind of like you sometimes, grandpa. Well, when you have copd it can be hard to breathe. It can be hard to get air out, which can make it hard to get air in. So i talked to my doctor. She said. Doctor symbicort could help you breathe better, starting within 5 minutes. Symbicort doesnt replace a rescue inhaler for sudden symptoms. Symbicort helps provide significant improvement of your lung function. Symbicort is for copd, including chronic bronchitis and emphysema. It should not be taken more than twice a day. Symbicort contains formoterol. Medicines like formoterol increase the risk of death from asthma problems. Symbicort may increase your risk of lung infections osteoporosis, and some eye problems. You should tell your doctor if you have a heart condition or high Blood Pressure before taking it. Grandfather symbicort could mean a day with better breathing. Watch out, piggies child giggles doctor symbicort. Breathe better starting within 5 minutes. Call or go online to learn more about a free prescription offer. If you cant afford your medication, astrazeneca may be able to help. Man when i got shingles it was something awful. It was like being blindsided by some linebacker. You dont see it coming. Boom if youve had chicken pox that shingles virus is already inside of you. It aint pretty when it comes out. Now im not telling you this so that youll feel sorry for me. Im just here to tell you that one out of three people are gonna end up getting shingles. I was one of em. So please go talk to your doctor or pharmacist. Sunday dinners at my house. Its a full day for me, and i love it. But when i started having back pain my sister had to come help. I dont like asking for help. I took tylenol but i had to take six pills to get through the day. So my daughter brought over some aleve. Its just two pills, all day and now, im back aleve. Two pills. All day strong, all day long. And for a good nights rest, try aleve pm for a better am. A notebook sold at auction in new york today not just any math notebook. This one belonged to the cryptographer portrayed in the oscarwinning film the genius credited with bringing world war ii to an end. While alan turing was breaking the germans enigma code during world war ii, he kept this notebook. He was working on saving europe and the world during the day and coming home at night and doing pure mathematics in his free time. Reporter the notebook was auctioned. The man is considered the modern the father of the modern computer. The subject of the oscarwinning film the imitation game. Im designing a machine to disguise every message every day. Reporter turings work was done in anonymity. Whats happening here was done in top seek ratted. Absolutely top secret. Reporter last fall for cbs sunday morning, i visited hup 8 where turing and his team used a captured german encryption machine to create their own codebreaking machine. Does this machine still work . It does. Its the only working one in the world. Want to see it running . Reporter id love to see it running. Absolutely. Reporter turings machine, its said, shortened the war by two years. Was the family at all aware what he was doing . For the first half of the war, the family didnt know where he was placed. Reporter even you didnt know . No, we crowded around this small black and white tv set to find out when the bbc put out a Little Program on it. Reporter arrested in 1952 for gross indecency with another man, turing would take his own life at age 41, long before the world understood what he had accomplished. But with his notebook selling to an anonymous bidder for just over 1 million sold. Thank you. Reporter the value of alan turings achievement is at least being appreciated. Anthony mason, cbs news, new york. Pelley thats the cbs evening news for tonight. For all of us at cbs news all around the world captioning sponsored by cbs captioned by inside beyonces secret family wedding, madonnas shocking makeout and jlos after hours hookup. We have new details on the couples making the news this weekend. I have had a few good ones. Well tell you where jlo and cast were reunited and where Bradley Cooper got back with his ex. Mean why mad donwhile, madonnas surprise smooch with drake. You just have to see beyonce at her moms nautical i dos. A wedding is a beautiful thing. Then we have bobby browns first words to bobbi