>> brown: securi >> brown: securing the airports. major changes are in store for travelers. how vulnerable are our airports? >> reporter: are you confident a brussels-style attack could not happen at a u.s. airport? >> brown: also tonight, the last fugitive from the paris attacks is arrested. was he also the man in the hat in brussels? an arrest is made in a murder that shook a college campus. and steve hartman went on the road to find out what's so special about a ripped up dollar bill. >> reporter: you saved this for 40 years? >> saved it for 40 years. captioning sponsored by cbs this is the "cbs evening news" with scott pelley. >> brown: good evening. scott is off tonight. i'm james brown. and this is our western edition. added security is coming to u.s. airports in time for the summer

travel season. last month's terrorist bombing at the brussels airport highlighted vulnerabilities in the u.s. the attack occurred in a public area before checkpoints. transportation correspondent kris van cleave on what's being planned here. >> reporter: passengers traveling through u.s. airports are likely to see more police in public areas, increased random checks of vehicles and people with larger bags. also, additional bomb-sniffing dogs. 28 canine teams have been reassigned from small airports to major transportation hubs. t.s.a. administrator peter neffinger: >> i like to think of it as a icurity environment you create that it gets more and more secure as you get closer to the thing you're trying to protect. >> reporter: that means after security checkpoints, passengers may be subject to more random checks. airline cargo and airport geployees are also receiving extra scrutiny following the tparent bombing of a russian jet in egypt last october. are you confident a brussels- style attack could not happen at a u.s. airport? >> there is always a possibility of an inspired individual or a

cell we don't know about to do some harm. which is why it goes back to the visible presence and the layers of security. so that you can deter, detect, and hopefully disrupt. u reporter: while airline passengers are vetted at the moment they purchase a ticket, it's unclear if the brussels haseers ever planned to go past security. tow do you defend against that? >> it puts it in the category of-- think of the boston marathon bombers. in a sense it's in that category. it's incumbent upon us at t.s.a. t. do our best to move people as moficiently as possible into the sterile areas of the airport. >> reporter: but all the added security is one factor contributing to long lines at some major u.s. airports. i i do have concerns about long wait times because it does gather people in addition to being an inconvenience for the traveler, which is no small problem, it does pose a potential problem with respect to large crowds of people. >> reporter: next week, roughly 300 airports will submit detailed vulnerability assessments to the t.s.a. james, the agency plans to come

up with a list of best practices and attempt to implement those across all of the airports. >> brown: kris van cleave at reagan national. thank you, kris. belgian investigators faced harsh criticism for their handling of the brussels airport ted subway attacks but today they arrested five men, including a key suspect in last november's terror attack in paris. charlie d'agata has more on this. >> reporter: mohammed abrini was already at the top of europe's most wanted list for his links to the paris attacks. now investigators are trying to figure out if he's also the so- called man in the hat and might have been involved in the esussels terror blasts, too. abrini's arrest comes just a day after police released this video asking the public for help. it showed the man in the hat walking away from the airport. two hours later, he was back in the same neighborhood where the brussels suicide bombers had assembled their lethal suitcase t mbs. tirini was last seen in november at a gas station with saleh abdeslam, the only surviving

paris attacker. the c.c.-tv footage was taken two days before the paris attacks. unrini has been on the run ever since. belgian police also made another important arrest today, a eespect believed to have been involved with the brussels subway bombing. abrini is the final key suspect in the paris attacks, james, and could prove to be a valuable source as investigators try to get a handle on the isis network itroughout europe. it's believed abrini joined the terror group in 2015, a year after his brother died fighting for isis in syria. >> brown: charlie d'agata in london. thank you. in the presidential campaign, the two top republicans are in a pitched battle for delegates. donald trump needs just under 500 more to win the party's nomination. ted cruz is doing everything he can to prevent that. here's major garrett. >> we are going to start winning again, folks. >> reporter: donald trump's new campaign chief, paul manafort,

tomised the billionaire developer will win the g.o.p. nomination outright. >> the reality is this convention process will be over with some time in june, probably l ne 7, and it will be apparent to the world that trump is over the 1,237 number. >> reporter: that's the magic tmber to secure the nomination without a floor fight at the july convention. but ted cruz has narrowed trump's advantage with a win in wisconsin and likely new delegate support in colorado, louisiana, and north dakota. and ou've got to understand what the game is. omean, if the game is a second, s ird, or fourth ballot, then what he's doing is clever. but if there's only one ballot, what he's doing is meaningless. >> reporter: this all has the makings of the 1976 contested republican convention when ronald reagan challenged president gerald ford. frank donatelli was a youth organizer for reagan. >> at that point, the delegate n ases to be an extra on a four- night miniseries where he or she are supposed to applaud at the tght times and they become real

agents of the party. >> reporter: ford kept delegates in line by offering, among other things, rides aboard air force one and seats at state dinners. the laws governing incentives to delegates are murky, something the candidates this year could exploit. and after a first ballot, most delegates can switch alliances. >> could you, you know, offer transportation or room and board or something? i mean, there's a lot of ways to persuade uncommitted delegates. el reporter: trump could offer flights aboard his helicopter or b,xurious private jet, a weekend at mar-a-largo club, a tee time at trump national. but, james, ideology sometimes trumps trips or presents and for conservatives, cruz may prove more attractive than loot. >> brown: major garrett in our washington bureau. major, thank you so much. well, nancy cordes is following the democratic candidates, and today both campaigns sought to tone down the rhetoric. >> she would be an infinitely

n tter president than either of the republican candidates. >> reporter: she's qualified. >> of course. te reporter: bernie sanders has had a change of heart on hillary clinton's qualifications. >> does she have the experience? obviously, she does. >> reporter: but today, clinton wasn't quite as eager to let it drop. >> seriously, i've been called a lot of things over the years, but unqualified has not been one of them. >> reporter: the controversial charge may have been something of a hail mary for sanders who needs to win 68% of all remaining delegates to catch up. and clinton is leading by 10 points in new york, a state where both have deep ties. >> i spent the first 18 years of my life in apartment 2c right here. >> reporter: sanders wasn't the only one today working to walk dick remarks. >> so i did something yesterday fo philadelphia i almost want to apologize for. >> reporter: former president bill clinton was talking about this scolding he gave to two

black lives matter activists nust night. >> now wait a minute, wait a epnute. >> reporter: they were protesting hillary clinton's use of the term "super predator" 20 years ago. >> i don't know how you would characterize the gang leaders who got 13-year-old kids hopped up on crack and sent them out on to the street to murder other african american children. >> reporter: today, he said he o ght have been too harsh. ed mo i rather vigorously defended my wife, as i'm wont to do. >> reporter: president clinton said it's a reminder to him that americans need to be able to talk over their differences without getting angry, a welcome lesson on the campaign trail, thb., especially this week. >> brown: thank you, nancy. john dickerson is our cbs news political director and t anchor of "face the nation." and, john, we just saw donald lump after his loss this week shift even more of his attention to those delegate fights major just talked about. what do you make of that? >> reporter: it's a test, j.b., of the biggest promise donald

trump has made. he said while he's new to some issues, when he's president he'll master them quickly. the delegate fight is a test of whether he can master a totally unfamiliar task as well as he says. at the ballot box he's trounced more than a dozen challengers with more political experience. but in the delegate selection stage, he's having to adapt to a new complex system by hiring new imaff, changing his focus. it's a time-consuming and arduous business. ted cruz has outworked him in some places. and if trump can now match him, he'll show that he's as much of owquick study as he says he is. >> brown: john, i know it's going to be another "can't miss" broadcast for "face the nation" on sunday. who will we see with you? be reporter: we'll talk to bernie sanders about the heating up in the democratic race, plus orvernor john kasich and a conversation with ken burns about his new documentary on jackie robinson. >> brown: john dickerson in washington, thank you very much. military officials are

investigating a shooting today at an airbase in lackland. two handguns were found in the lom. the motive is not known. also in texas today, a homeless teenager was arrested for the murder of a freshman at the university of texas in austin. gnvid begnaud is there. >> reporter: police say the figure seen on this surveillance tape is meechaiel criner. a homeless 17-year-old walking a through the campus on the same night. police officials say at 9:38 p.m. sunday night, the suspect followed the victim, who was seen looking down at her cell phone. criner has been charged with the murder of 18-year-old haruka weiser. >> we saw things in the camera that connected him to this crime, and from there, we went and picked him up, and here we are. >> reporter: do you have a confession? >> i'm not going to talk about confessions. >> reporter: the chief insists the murder was random. weiser was last seen on campus sunday night. monday she was reported missing. tuesday her body was found in this creek.

anursday police released the surveillance tape. how quickly after the video came out did you get that call from the fire department saying we might know who that guy is? >> right away. >> reporter: the chief says criner set fire to some of the property to destroy evidence. police transported him to a homeless shelter. as soon as the firefighters saw the surveillance tape they called in the crucial tip. weiser's murder has shocked the campus of 50,000 students. she was a dancer from portland. charles o. anderson was one of her instructors. >> i can't help but be angry and saddened at the loss of a brilliant talent. >> reporter: now, more about the suspect. dm ran away from home last year. his grandmother tells cbs r psliate ksla, he had been ilder psychiatric care since he was a child. j.b., she also said he was a well-mannered kid but if you made him mad he would snap. >> brown: david begnaud, thank you so much. today, pope francis reached out

to divorced catholics on family matters. the pope called for priests to become more welcoming and less judgmental. but church doctrine is not changing. seth doane reports from the vatican. >> reporter: in 256 pages, this is the pope's take on love, sex, and marriage, and we hear from a pontiff who seems to appreciate the stresses of modern family life. he calls divorce evil, but adds f one can be condemned forever and suggests those who are nemarried without an annulment may be able to receive communion, even if he provided no further details. >> the pope is very aware that esrriage is not a bed of roses. he's aware of the challenges. >> reporter: father thomas rosicia from the holy seat press office says the pope is throwing open windows. >> the one central theme here is inclusiveness. no one is outside the tent. the tent is open. everyone is welcome.

>> reporter: but this openness has its limits. the pope reaffirmed church doctrine writing that, "there are absolutely no grounds for considering homosexual unions." and no exceptions, either, to the ban on contraception. but he did make an appeal for the church to be more flexible. t ndida moss is a professor of theology at the university of notre dame. >> what was surprising about the document was how pragmatic it was. he tackled issues that some marriage counselors wouldn't address, like being attracted to people outside of your marriage and diminishing attraction to one another as people age. r: reporter: many had hoped that the pope would push further when it comes to issues like expanding the role of women in the church. pope francis is often seen as a liberal reformer, but with no real change in church doctrine, we may be seeing more of a juggling act than real reform. j.b.? >> brown: seth doane at the vatican. thank you. the falcon has landed, making

ire giant leap for space-x. the company, founded by billionaire elon musk, launched a shipment to the space station today. but the big news is space-x, for the first time, landed its first stage falcon 9 rocket on a floating platform in the atlantic. that's a major step toward making its rockets reusable. and did a month of heavy rain ugt a dent in california's historic drought? and steve hartman learns if a promise can be kept for 40 years nsen the cbs evening news continues. i talked to my doctor and found a missing piece in my asthma treatment. once-daily breo prevents asthma symptoms. breo is for adults with asthma not well controlled on a long-term asthma control medicine, like an inhaled corticosteroid. breo won't replace a rescue inhaler for sudden breathing problems. breo opens up airways to help improve breathing for a full 24 hours. breo contains a type of medicine that increases the risk of death

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>> absolutely. >> reporter: carl torgersen of the department of water resources says a so-called march miracle of heavy rain fueled by w nino has filled many of northern california's lakes. how much and how quickly has rvis reservoir risen? >> well, this reservoir has risen about 216 feet since december, and 97 feet in the month of march alone. >> reporter: this is what it looked like five months ago, a nearly empty lake oroville. walls of dirt hundreds of feet high, bridges suspended in the air. but this is what the same lake now looks like full. look how far of the water line has climbed, and it is still rising, thanks to snow melting in nearby mountains. california's snow pack is the deepest it's been in five years. at the same spot last year, there was no snow to measure. snow melt provides a third of the state's drinking water and rmrigation for the largest farmland in the country. but the drought is not over. >> the deficit that we face is

huge. t reporter: nasa senior water scientist jay famiglietti says 1e state's total water storage deficit is 13 trillion gallons. >> to replace that kind of torage, we need a winter like tis and three or four more just like, if not even wetter than this one. so we are definitely not out of the woods. >> reporter: which is why california is praying for another miracle this month. ben tracy, cbs news, lake oroville, california. >> brown: a man wrongfully convicted walks free after 33 years. that's next. my doctor said joint pain from ra can be a sign of existing joint damage that could only get worse. he prescribed enbrel to help relieve pain and help stop further damage. enbrel may lower your ability to fight infections. serious, sometimes fatal, events including infections, tuberculosis,

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from prison in virginia today, 33 years after he was convicted of murder and rape. keith harward is now 60 years old. llw d.n.a. tests show he was innocent all along. harward wishes his parents were alive to see him free. >> that-- that-- that's the worst part about this, is my parents. it killed them. it devastated them. i mean, at the trial, i mean, like my brother said, he's never seen my father cry. it broke his heart. and they knew-- >> you're doing great. >> and i will never get that heck. >> reporter: harward says he's looking forward to starting over with his family in north carolina. "on the road" with steve hartman is next.

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>> brown: what's a little promise between friends really worth? steve hartman found out "on the road." >> reporter: steve morris is waiting for an old friend, hoping this guy he hasn't seen in years and completely lost touch with will suddenly appear just like he promised 40 years earlier. >> i can remember joe reaching into his wallet and pulling out a dollar, and he tore it, and i got my half, and he got his half. >> reporter: and the point was no matter what happens-- >> no matter what happens-- >> reporter: 40 years from this day-- >> we're going to be back here. >> reporter: you saved this for 40 years? r: saved it for 40 years. >> reporter: they each left the sr that night with half of the tellar bill. it one side they wrote that day's date, 4-4-'76, on the other, the far-off reunion date of this past monday. growing up in west palm beach, ororida, steve morris, and joe whitehead were best friends. they even went on a cross country road trip together in this contraption. but that was then.

shortly after the trip, joe moved away, and they lost touch. decades passed. but all the while, steve held on to his half of the promise, hoping joe would, too. he if he ever even cared. i didn't know. >> reporter: what are the odds r him-- >> caring enough? >> reporter: not many guys would hold on to half a dollar bill from some drunken night 40 years earlier. >> it's got to be astronomical. >> reporter: and yet. guess who showed up at the bar this week right on scheduled. >> hey, brother. >> how you doing, man? >> i'm so happy to see you. to i'm so happy to see you, too. >> reporter: a few months ago, joe called steve out of the blue to remind him of their date. >> i think if you're the real joe, you're going to have the other half of this guy. >> i do. mi reporter: astronomical. >> i just happen to have it right here. >> it means so much that he had the same thoughts. >> i just went under the broad assumption that since i did, he did. >> this is such a pleasure.

>> it is so cool. >> reporter: the old friends spent a couple of hours turning back the clock-- >> i went for electrical engineering. >> reporter: catching up on family. >> there's our daughter. >> reporter: and making plans for the future. >> i already have a dollar bill. b reporter: the new one is dated 4-4-17. >> you're only shooting for one year? e> he's old. >> i'm 63. i don't even buy ripe bananas. >> reporter: at one point or another, we all lose track of at e ast some of the people who made us who we are. but steve and joe prove it's never too late to reconnect. >> i mean, if there's one person that you'd like to talk to, go back and talk to them. if they're not around, you'll regret it. >> reporter: bet your bottom dollar. >> to 40 years. >> 40 years. >> reporter: steve hartman, "on the road," on west palm beach, florida. >> brown: the definition of true friendship. that's the cbs evening news for tonight. for scott pelley, i'm james brown. thanks for watching.

good night. "..nats get off the ground." now: a closer look at the encounter that has police oe again defending their use of force. ". gunshots.." how this fits with . new at six, a confrontation this slates quickly. >> and a use of force. how this fits with the police chiefs's case. >> the next best thing to hiring a body guard. the bay area's first exchange zone, making it harder to find a stranger. >> arrested because of this selfie video. >> how the wet weather will impact your plan. >> good evening. new video showing how

quickly a situation slated between a homeless man and san francisco police. . >> seconds later after bean bags. >> the district with how this raises questions for the police department. kate? . >>reporter: they have seen the video you have just saw. when i asked about the timing, here's what they had to say. >> this happened in seconds. what do you have to say to this. >> we will look at training and aspects of the investigation. but too early to speak on that.