>> pelley: the jury says death. the boston marathon bomber must pay the ultimate price. >> he wanted to go to hell and he's going to get there early. >> pelley: also tonight the amtrak engineer talks to investigators about the philadelphia disaster. the wreckage of a helicopter that crashed in nepal has been found. and steve hartman "on the road" with a young man who just made his mother's day. >> i told him i said i love you, but you know what, i think your son just outdid you. captioning sponsored by cbs this is the "cbs evening news" with scott pelley. >> pelley: the jurors said the boston marathon bomber showed no remorse, so today, they showed him no mercy. they sentenced dzhokhar tsarnaev to death for the april 2013 attacks that killed four people

and wounded 260. u.s. attorney general loretta lynch called it a fitting punishment for a horrific crime. the jury's decision came after 14 hours of deliberation. don dahler is at the federal courthouse in boston. >> reporter: it's a city that has been holding its collective breath for this. >> yes! >> i think that it's justice. >> reporter: but inside, dzhokhar tsarnaev showed little emotion, standing with head bowed as his fate was announced. federal prosecutors knew they had an uphill battle in massachusetts, a state that has outlawed the death penalty in its own cases. boston's police commissioner william evans: >> you know, not going to blow up our marathon, they're not going to blow up our city, and they're not going to inflict any type of terror in our country. i think that's the strong message we sent today. >> reporter: it's likely, this was the critical image for the jury surveillance video of tsarnaev pl a deadly pressure cooker bomb four feet away from the richard family which witnesses said put

eight-year-old martin richard through excruciating agony before he deed as his mother begged him to hold on. all six capital counts that put tsarnaev on death row involved his use of the bomb that killed richards and lingzi lu. the defense's case centered on the argument it was the older brother, tamerlan tsarnaev who made the younger brother commit jihad. three jurors agreed with the defense the crime would not have happened without the influence of the older brother. >> nobody can see into another person's mind. our job is to try to recognize the facts and the evidence that would help the jury make that decision for themselves. >> reporter: the defense team admitted tsarnaev's guilt from the beginning but pleaded for mercy. ultimately, neither that nor his use nor tells of his dizz functional family's nomadic journey swayed the jury. what did sway the jury was the death, the injuries, the maiming of innocent people the

callosness with which tsarnaev and his brother conduct third terrorist attack and his utter lack of remorse during the trial. formal sentencing will take place over the next two months, scott. tsarnaev will then be transferred to the federal penitentiary in terre haute, indiana, as his defense team mounts an appeal. >> pelley: don dahler reporting. don, thanks very much. now for the reaction from families of tsarnaev's victims we're going to go to anna werner. anna. >> reporter: scott none of the victims or families who spoke here today said this could be a crd a moment for celebration. there were no winners here today, they said but there was justice, and punishment for tsarnaev. >> what he tirnd into, obviously, was-- we know what he turned into. he turned into a monster. why did that happen? we'll never know. >> i have to watch my two sons put on a leg on every day so, i mean, i don't know, closure. but i can tell you it feels like a weight has been lifted off my

shoulders so i think there is some form of a good feeling. >> there is nothing happy about having to take somebody's life. i'm satisfied. i'm grateful. >> i remember when those bombs went off, and i remember vial, disufght thing that this person did, and his brother. this is nothing to celebrate. this is a matter of justice. he's going to go to hell. that's where he wanted to go, but he's going to get there quicker than he thought. >> reporter: many victims and their families are still dealing with ongoing psychological and physical trauma, but scott one victim said today "i feel like i can breathe again." >> pelley: anna, thank you. this is the first time defense attorney judy clarke has lost a high-profile death penalty case. she negotiated plea deals that spared the lives of the unabomber ted kaczynski and jared loughner, who killed six people while attempting to assassinate congresswoman gabby giffords. clarke also persuaded a jury to

reject a death sentence for susan smith who drowned her young sons. rikki kleiman is our cbs news legal analyst. rikki, the jury seemed to hang on the fact that the defendant showed no remorse. >> no remorse was in fact an aggravating factor. no remorse because he sat there stoically. he never shed a tear except once when his aunt talked about his childhood. so he felt sorry for himself but apparently t not feel anything about all those victims what he did to them creating double amputees, single amputees, as well as the death of four people. >> pelley: and because the death penalty has been imposed there will be an automatic appeal. >> indeed, there is an automatic appeal, although there will be a sentencing hearing formally within a couple of months. the appellate process in and of itself, up to the first circuit court of appeals in boston, is going to begin a process that could take years. scott, when we look at the word

"execution" in the federal system, went into effect 1998, there have only been three out of 80 people who have been executed in the federal system. there has not been a federal execution since 2003. we have a long way to go. >> pelley: rikki kleiman thank you very much. now to another breaking story, a surprising revelation this evening. the national transportation safety board said a projectile appears to have hit the windshield of the amtrak passenger train before it derailed tuesday night killing eight passengers and severely injuring dozens. it happened, according to one witness, shortly after a second train reported being hit by a rock or a bullet near the same location. now the f.b.i. has been brought in. chris van cleave has the breaking story for us tonight. >> reporter: scott the national transportation safety board is asking the f.b.i. to

examine damage to the engine of train 188. take a close look at this picture. if you look at the windshield there, you can see it is cracked, looks shattered. that's the damage the f.b.i. is going to be taking a close look at. now, the n.t.s.b.'s robert sumwalt explained late this afternoon, a philadelphia computer train reported being struck by something shortly before the amtrak train derailed. in addition to the engineer, the n.t.s.b. interviewed two assistant conductors from train 188. one said that shortly after leaving the philadelphia train station, she heard a septa engineer report his train being hit. >> she recalled that the septa engineer had reported to the train dispatcher that he had either been hit by a rock or shot at and that the septa engineer said that he had a broken windshield, and he placed his train into engineer stop. >> reporter: she went on to tell investigators she also believed the amtrak train had been hit and sumwalt described a

circular part of damage on the lower part of the windshield. >> this is hernition and certainly we're going to be conducting further investigation of this comment. our investigation is not independently confirmed this information, but we have seen damage to the the left-hand lower portion of the amtrak windshield that we have asked the f.b.i. to come in and look at for us. >> reporter: we also learned today that the engineer of the train did meet with n.t.s.b. investigators. he was cooperative. he reported no issues with the train, no issues with his own health and no fatigue issues but he continued to say he has no recollection of the crash apparently no recollection of the conversation about something striking that septa train. but with this new information and the f.b.i. coming in, this is a major turn in this

investigation. but still, we don't know what caused the amtrak train to accelerate to over 100 miles per hour. scott. >> pelley: we want to emphasize we don't know what all this means yet but there will be more in the coming days. kris van cleave on the story thank you. one of the eight people killed in the wreck was laid to rest today. midshipman justin zemser. more than 100 of his naval academy classmates turned out for his funeral on long island. zemser was 20 years old. today, searchers in nepal found the wreckage of a u.s. marine helicopter that disappeared on tuesday. six marines and two nepalese soldiers orp a mission to deliver aid to earthquake victims. nepal's government says six bodies have been located and seth doane is following this. >> reporter: the missing huey helicopter went down in rugged, mountainous terrain. lieutenant general jon wissler. >> because of the name of the

wreckage it is unlikurvivors at this time. >> reporter: after a three-day search, it was the nepalese army that first spotted the wreckage. it was discovered at an altitude of 11,200 feet, halfway between kathmandu and mt. everest. it is still unclear what happened. radio chatter before the helicopter disappeared suggested there was some sort of fuel problem, but no distress signal was ever received. the marines had been delivering aid to stranded villagers cut off after two earthquakes. the missing huey was part of a marine light attack helicopter squadron based at camp pendleton. at home, friends and family of those on board braced for the worst. the parents of marine captain lizchristopher norgren from kansas said the u.s. military confirmed their son was among the missing. mark bell is a family friend. >> he did what he loved most and that was being a pilot for the

marines. >> reporter: also on board was captain dustin lukasiewicz from nebraska. he and his wife are expecting a child in june. just days ago he spoke about his mission. >> we were able to deliver some rice potatoes and tarps. my name is captain lukasiewicz and we stand with nepal. >> reporter: and lance corporal jake hug of arizona had just telephoned his mom on mother's day. the recovery effort will resume with daybreak here in asia. scott, the u.s. sent in an elite parachute team to help secure the site and promises a full investigation. >> pelley: seth doane in our beijing bureau this evening. seth, thank you. presume said today that the blues has lost its king and america has lost a legend. b.b. king died last night at his home in las vegas. he was 89. anthony mason now on a man who worked the strings of a guitar like no one else.

>> reporter: with the flicker of his wrist, he could make a note speak. "i wanted to connect the guitar to human emotions," b.b. king said. how would you describe the blues? >> it's good me when i'm feeling bad, and good for me when i'm feeling good. >> reporter: the son of sharecroppers, riley b. king was born on a cotton plantation outside berclair mississippi. at 22 he hitch hiked to memphis where he picked up the nickname, "blues boy" or b.b. ♪ it was 3:00 in the morning can't even close my eyes ♪ >> reporter: "the 3:00 blues" was his first big hit in 1952. then he hit the road and never stopped. in 1956, you played 342 days? >> 342 one-nighters. >> reporter: but he wouldn't play to a white audience until

1968 at bill graham's fillmore west in san francisco. >> i was actually scared. the kids didn't know me. they just knew the music. >> reporter: right. >> and he said, "ladies and gentlemen, b.b. king," and everybody stood up. that was the beginning of b.b. king in rock 'n' roll. >> reporter: two years later he scored his biggest hit. ♪ the thrill is gone ♪ >> reporter: his instrument was always called lucille. >> sing, lucille. >> reporter: he named all his black gibsons after a woman at the center of a bar fight that almost ruined his first guitar. he would influence hendrix, play with u2, and eric clapton. who said on facebook today-- >> he was a beacon for all of us who love this kind of music and i thank him for from the bottom of my heart. >> reporter: in his last years, he didn't walk easily, but on stage his fingers could

still fly. "rolling stone" ranked you number three guitar player of all time. >> i don't believe that. >> reporter: you don't. >> no, but i ain't going to tell them. >> reporter: and on the road till the end of the road. road. >> i'm gonna do this till i die folks. >> reporter: the king of the blues kept that promise. anthony mason cbs news, new york. >> pelley: record rain has been falling in california, but enough to break the drought? and the spectacularsitis of mount etna when the cbs evening news continues.

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the san diego airport got six times its normal may rainfall in just one day. there was so much rain in los angeles, hollywood's walk of fame flooded but one drenching is not enough, says kcbs meteorologist evelyn taft. how much is it going to take to really make a difference with the drought? >> a lot more of these i would say. at least a dozen of these storms if not more than that. >> reporter: but taft says california's climate may be in for a new and welcome change. is that rain coming? >> next year we could get a nice el nino event, so if that pattern persists we could get a whole lot of rain. >> reporter: now an el nino can occur when waters warm significantly in the pacific ocean, like it has been for last couple of months. that can make storms a lot more powerful and a lot wetter right here, and, scott that's exactly what california needs. >> pelley: carter evans thanks very much. a cop wounded as the tsarnaev brothers were attempting a getaway got a promotion today.

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there's over two hundred thousand students in philadelphia. jim kenney and tony williams are fighting over public schools versus charters. i think they're both wrong...it's making sure they all get a good education. teachers should have their contracts respected. they also should be held accountable. and it's wrong philadelphia gets less school funding than other parts of pennsylvania. i'll work with harrisburg to change that. but if they refuse i'll take them to federal court. as mayor i'll do what's right for them. >> pelley: sundown brought a spectacular show in sicily this week. mount etna has been erupted since tuesday, and the very best views are at night. by sheer coincidence, on the day dzhokhar tsarnaev was sentenced to death, transit officer richard donohue was promoted to sergeant. his parents pinned the insignia on his collar.

donohue was nearly killed in the shoot-out with the tsarnaev brothers and just went back to work. a bullet severed a major artery in his leg and he needed pints of blood. >> sometimes i think. how crazy it was and how lucky i am to be alive and how lucky i am that certain people took certain actions because you take one person out of the equation and i might not be sitting here. >> pelley: sergeant donohue showed his appreciation last month by donating blood in watertown. a young man turns back the clock for his mom. steve hartman "on "on the road"" is next. you do all this research on the perfect car. gas mileage , horse power... torque ratios. three spreadsheets later you finally

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own unfulfilled dreams through their kids. that wouldn't do for one kid we know. he set out to make his mother's dream come true. steve hartman met them "on the road"." >> reporter: for most of the seniors at waterford kettering high school outside detroit prom is optional, but not for danottis smith. every time this kid even suggested not going, he got a lecture from his mom. >> she always bring up the story, you know, she always started crying. >> you're going to do everything that i wasn't able to do. >> reporter: belinda smith grew up dirt poor. her family couldn't afford to send her to prom. >> every day i came home from high school, i cried becausented to go. >> reporter: that's why she vowed do natis would have the opportunity, and that's why she was so disappointed when it seemed like he wasn't going to take it. every time she asked him about prom he was evasive until about a month ago when he finally came

clean. >> i said, "what's wrong donottis," and he said, "i want to ask you if you want to go with me." >> reporter: you. >> and i'm like, "yeah i'm going." i said "yeah, heck, we're going. when are we going to start looking for stuff." >> i said we have to start looking for stuff now. >> reporter: he helped his mom with every step, borrowed a carr from his aunt, drove around the block and got back out to pick her up, corsage and all just like she dreamed of. >> i told my husband "i love you, but you know what? i think your son just outdid you." i just had to tell you that. >> reporter: the kid really did it up right. >> she was look good. she was beautiful. she was gorgeous. >> reporter, of course, there is disadvantages to bringing your mom to prom. >> stop chewing that gum. >> reporter: like getting parented on the dance floor. >> you better move your himself boy. >> i'm moving! i'm moving!

>> reporter: but that's the truly amaze thing about donattis, he didn't care. on this night when most kids want to be as far away from their parents as possible, he had the courage-- and you know it took courage-- to make this her moment. >> this is my night. >> now she can say she went to prom. >> put a smile on my face and an imprint on my heart that's going to last me a lifetime. >> reporter: whoever said, "you're only young once" only never had a son who believed in second chances. steve hartman, "on the road"" in pontiac, michigan. >> pelley: and that's the cbs evening news for tonight. for all of us at cbs news all around the world i'm scott pelley. and i'll see you sunday on "60 minutes." good night. captioning sponsored by cbs captioned by media access group at wgbh access.wgbh.org

bill cosby's new interview as he's hit with sexual assault questions. >> we're with his former co-star who claims he krug drugged and raped her, what she is delaware manneding tonight. >> are you guilty? the did you do it? >> i have never seen anything like this. >> what he has never seen is an army of women he has victimized rise up. it is disgusting. >> then letterman's only tv interview before he leaves late night along with the good, dave also touches on the tough times. >> a lot of arguments and nearly fistfights. >> past alcoholism and affairs. >> his wife regina comes up a lot. also what's up with patrick dempsey his new outing l