>> looks great. >> cbs weekend news is next. ♪ ♪ captioning sponsored by cbs >> ninan: upping the ante. president trump warns of new tariffs, escalating a trade war with china. >> although there is often a talk of winning, there is no winner in a trade war. >> ninan: the impact these tense talks will have on american families. under water-- severe weather and flash flooding is pounding parts of the south. we're tracking the path of this dangerous and potentially deadly storm. taking flight-- an historic program in the u.s. >> we see this model being in large medical campuses, hospital campuses in urban environments. >> ninan: how drone deliveries could help save lives. and, under his wing-- a man with a plane, and a purpose. >> i actually never saw a pilot that, you know, that looked like myself. >> ninan: how he's changing

the culture of aviation, and addressing a critical problem in our nation's skies. >> ninan: good evening. i'm reena ninan. there's heightened tension tonight between the world's two largest economies. president trump is now threatening more tariffs on china. nikole killion is in washington. >> reporter: president trump returned from golf as he teed up a new trade fight against china. he tweeted, "such an easy way to avoid tariffs? make or produce your goods and products in the good old u.s.a. it's very simple!" >> we're going to be taking in more money than we've ever taken in. >> reporter: friday, the president slapped a 25% tariff on $200 billion worth of chinese goods, and ordered additional tariffs on remaining imports, worth $300 billion. >> jobs are coming back, and america is back. you are entering a growing american economy. ( applause ) >> reporter: at a commencement ceremony, vice president mike

pence touted the president's record. a few 2020 contenders countered on the trail. >> he just doesn't know how to cut a trade deal. >> it is punishing the farmers throughout this country. >> he's created disruptance in our trading partners across the globe, and started a real trade war with china. >> reporter: the longer the impasse drags on, economists warn, more of us could pay the price. >> the net effect is higher prices for american consumers, regardless of, if you buy it from american-made company or from a chinese-made company. >> reporter: both sides say talks will continue. china says that'll happen in beijing, although u.s. officials say nothing is planned as of now. reena? >> ninan: nikole, it has been a pretty challenging week for the president, with the fight with democrats over the mueller report, and now his tax returns. where does all that stand at this point? >> reporter: well, in a tweet today, the president blasted democrats for relitigating the matter, after a subpoena was issued last night for his tax returns. he also called them out for

focusing too much on obstruction in the mueller report. this, as we learn that the white house asked former counsel don mcgahn to publicly state that the president did not obstruct justice, although mcgahn did not comply. reena? >> ninan: nikole, thank you. severe weather is threatening millions of people across more than a half dozen states tonight. in mississippi, a freight train derailed after high water washed out the tracks. meteorologist jeff berardelli is tracking everything. jeff, good evening. >> good evening. unfortunately, the rain continues. some of it is very heavy, from texas all the way across the southeast. as you can see, we have flood watches and warnings ongoing. the good news is this is the last chunk, it is going to be moving to the east overnight tonight. but why has it been so stormy, with so much flooding? it is because of an el nino. we have very warm waters in the pacific, super-charging the subtropical jet stream, bringing moisture in from both the pacific and the gulf of mexico and dumping it right on the southeast. overnight tonight, showers and

thunderstorms will continue as everything moves east into alabama, and into georgia as well. now, during the day tomorrow, that storm creeps up the eastern seaboard. it's going to be a little on the miserable side for moms. we're talking chilly, breezy and heavy rain, kind of a washout for new york and philly. temperatures in the upper 40s. here is the good news. we are going to be dealing with nicer weather across some parts of the country. in the southeast, there is severe weather, as you can see, but behind that, we are looking at much dryer air, lots of sunshine and warmer air, especially for the western half of the country. so for moms in the western part of the country, we're looking good. >> ninan: jeff, thank you. more than a year after the trump administration's now- discontinued "zero tolerance" policy, many families remain separated. in tonight's "eye on america," manuel bojorquez has a reunion of a father and daughter who were apart for 326 days. >> reporter: what comes after four? five! seven-year-old angie is learning to count in english. >> nine... ? >> ten.

>> ten, there you go! that's also the number of months she's been separated from her father, adelino. they arrived at a border crossing in mcallen, texas, last year, seeking asylum from threats of violence in honduras. angie was taken from him on june 1, during the trump administration's now- discontinued zero-tolerance policy. what was it like to be separated from your dad? >> ( speaking spanish ) >> reporter: when you're separated, you feel it in your heart? ( speaking spanish ) >> si. >> reporter: the only parent she knew, adelino, who had been raising her as a single parent, could request to be reunited, but only at the risk of putting her back in detention. >> ( speaking spanish ) >> reporter: "after all this time, hugging my daughter is what's most important," he says. "it's all i can think about." the organizationmigrtogowpadeno nd so held from detention in california. the next day, he flew to texas to see her again.

>> ( speaking spanish ) >> reporter: "your dream is going to become true." >> si. >> reporter: "that you'll see him again." we were with her as she headed to the airport, and as 326 days apart finally came to an end... >> reporter: "if i, at 40 years old, got to feeling like i was t her tei ca imane," he says >> reporter: you did not want to let him go. why?

>> reporter: your concern now is how to talk to her about what happened? "when they separated her from me, she was asleep in my arms. i don't think she even knew what happened. at least now, the healing process can begin." manuel bojorquez, cbs news, houston. >> ninan: a north carolina hospital is pioneering a new program, to speed up the delivery of critical medical samples. kris van cleave gives us a glimpse at how drones could help save lives. >> reporter: this drone takeskee sam, like wls. the pioneering program is the brainchild of dr. stuart ginn, a former united airlines pilot.

>> we are interested in speed and reliability. >> reporter: he saw a way to speed up diagnosing patients. >> we're talking about shaving off 30 minutes to three hours, easily, from our lab, end-to-end lab time. >> reporter: which means faster results, so faster answers for his patients. to do it, wakemed partnered with shipping giant u.p.s. and drone maker matternet to launch the program in march-- the first revenue-producing commercial drone flights approved by the f.a.a. the eight flights carry up to 200 samples a day. this quad-copter is really the first of its kind. the first approved to be making deliveries. it carries medical samples in here to a lab about three quarters of a mile away. now, to do that on the ground, it's about a 45-minute walk. but up in the air, you could do it in under four. >> we see this model being in large medical campuses, hospital campuses in urban environments. >> reporter: dan gagnon is u.p.s. vice president of healthcare strategies. >> when we look at turn-around times, and how important it is

to get bloodwork in and the results turned back around, it's a critical space. >> reporter: last month, the university of maryland medical center completed the first organ donor drone delivery for a transplant, something that could make organ delivery safer and cheaper. google-backed wing is the first company to receive f.a.a. approval for drone delivery of goods to businesses and homes. the app-based service is already operating in australia, and soon in finland. it will begin in virginia later this year. mark blanks is the director of virginia tech's drone program, which partnered with wing. >> the biggest challenge for drone delivery mainstream will probably be public acceptance, to be honest. now we need to talk with the communities and figure out how to integrate this in a way that's beneficial for everyone. >> reporter: at wakemed, dr. ginn believes these drones will soon fly between hospitals miles apart and one day become a link to remote rural hospitals. kris van cleave, cbs news, raleigh. >> ninan: venezuela's opposition

leader, juan guaidó, is seeking to open relations with the u.s. military. the u.s. is backing guaidó in his campaign to oust president nicolás maduro. here's adriana diaz. >> reporter: when the spark of a revolution was quickly extinguished 11 days ago, venezuela returned to a stubborn stalemate between two self- proclaimed presidents. this remains an all-too-familiar sight for people who can no longer afford food. with inflation at more than one million percent, money is so worthless, this isn't enough to buy half a dozen eggs. children are starving to death. venezuela's child mortality rate has jumped 140% compared to 2008. nairovis ortega's son died from malnutrition and meningitis. he was almost 1.5 years old, but weighed a mere 13 pounds. the only thing she has is these beans. it will have to feed the whole family. they haven't had breakfast.

they're going to eat these lentils today, for their main meal, and she's going to see if she finds food somewhere else. she said, "it's not my fault." but amid the despair, there are helpers, like the women who run this community kitchen. outside, the line of kids bearing bowls is long, for what may be the day's only meal. the program, called alimenta la solitaridad, or feed the solidarity, was created by harvard-educated venezuelan roberto patiño. >> more than 300,000 children are in risk of dying because of the hunger crisis here in venezuela. >> reporter: patiño says they feed roughly 10,000 children a day. how has the political crisis affected the humanitarian crisis here? >>ha creata political situation. here, we didn't have an earthquake. we didn't have a hurricane. this was created by bad

decisions. >> reporter: how does it feel for you inside personally when you see kids starting to gain weight? >> well, it's really hopeful for me. we find energy and we find the possibility and the will to move forward when we see the impact that we're having on children. >> reporter: adriana diaz, cbs news, caracas, venezuela. >> ninan: if elected, vermont senator bernie sanders would be the oldest president in u.s. history. former defense secretary robert gates spoke to "face the nation" moderator margaret brennan about that. >> he's a peer of yours. he's got a year older. >> yes. >> you think he's right for this moment? >> i think i'm pretty busy and pretty active. but i think having a president who is somebody our age, or older, in the case of senator sanders, is... i think it's problematic. i think that... you don't have the kind of

energy that i think is required, to be president. i think-- i'm not sure you have the intellectual acuity that you might have had in your 60s. >> ninan: you can watch more of margaret brennan's interview with former defense secretary robert gates, tomorrow on "face the nation," 10:30 a.m. eastern, 9:30 central, right here on cbs. coming up, a desperate search for a millionaire businessman accused of murdering his wife. police say the trail of evidence made him a prime suspect. plus, changing the culture of aviation, one flight at a time.

inan forniaeighborhis now the focus of an international manhunt. a millionaire businessman, arrested for killing his wife, vanished after being released on bail. "48 hours" correspondent tracy smith reports. >> reporter: after peter and

q.c. chadwick went missing, the first sign of trouble was found in their newport beach home. sergeant ryan peters and lieutenant bryan moore worked the case. >> in the master bathroom, they initially saw the broken glass. >> we had blood at the bottom of the bathtub. >> reporter: hours ticked by with no sign of the couple, until early the next morning, when peter chadwick showed up in a gas station near the mexican border, 100 miles away from his home, and called 911 to say that his wife q.c. had been murdered. >> reporter: chadwick claimed that he took a housepainter named juan to his home, and juan attacked his wife, drowning her in their bathtub. he then threatened chadwick with a two-inch pocket knife. >> and juan orders peter to help him get q.c.'s body out of the tub. >> reporter: with juan at his side, chadwick claimed he was forced to drive all through the night with his wife's body in the back of his s.u.v.

police picked up peter chadwick and immediately found holes in his story. any signs of juan at all? >> no. >> reporter: just six hours after making that 911 call, peter chadwick was arrested for murder. in court, peter chadwick pleaded not guilty. he was granted $1 million bail; no problem for the multi- millionaire businessman. so as you're looking down the road, you're thinking peter chadwick is going to end up where? >> in prison. >> reporter: but peter chadwick had other plans-- and vanished. >> ninan: you can watch tracy smith's full report about the manhunt for "peter chadwick" on an all-new "48 hours" tonight at 10:00, 9:00 central. still ahead, how lebron james is making billions off the basketball court.

>> ninan: lebron james is often considered one of the greatest basketball players in the world. but, as i found out during my conversation with brian windhorst, who wrote a book about the athlete, he's more than just a basketball superstar. you began your book by saying, it's not so much lebron james's incredible athletic ability, but it's his awareness both on and off the court. how does he harnesth >> he is-- is a natural talent that he has, that i don't think people would ever know about unless they got to know him. in addition abily to be aware os

surroundings. he has great perspective. where, even in the moment, he can understand the bigger picture. >> ninan: how do you think it is that lebron had such an awareness so early on? >> he knew that people were dying to be in business with him, and he was more focused on leveraging that desire than he was in getting the biggest check out of the gate. he, at 18 years old, didn't really have any money, and that's what reebok was banking on, when he said, "you better have something more than the suitcase full of money." the people who were involved with it had never seen an 18- year-old ever do that. even the concept that he would take the time to meet with warren buffet at age, like, 22. the idea that you would even want to seek counsel from somebody like that means that you had a thirst to get a broader view of the world. >> ninan: talk to me a little bit about beats. >> when beats started, they didn't have any money. so, what lebron did was-- this was 2008-- he was in the olympics, and he just gave these pairs of headphones to his teammates.

and so, without giving checks to any of those players, here beats was getting this great ad-time. and four to five years later, they get sold to apple for $3 billion, and guess who's sitting there with a couple of points on the company that he had taken instead of an endorsement deal? >> ninan: so, 20, 30 years from now, are we going to be talking about lebron james the basketball player, or the business man? >> i think he would love it if it was both. as he said to me when i asked him what his goals were, he said, "i want it all." >> ninan: next on the "cbs weekend news," a pilot helping kids reach new heights.

>> ninan: finally tonight, the u.s. is facing a serious shortage of airline pilots. according to the f.a.a., the u.s. is expected to lose more than 13,000 pilots over the next 20 years. michelle miller explains how one man wants to bring those jobs back, while changing the aviation culture at the same time. >> reporter: for as long as 18-year-old davion lee can remember, he's dreamed of soaring high. >> i looked up and saw an airplane, said "mom, i'm going to fly that one day." it's just been a passion that grew in me ever since.r:pit romy coordinated turn! >> reporter: growing up, stanislaus also found an interest in flying, but he didn't have the same guidance. >> told myself that i would never probably be a pilot because i actually never saw a pilot that looked like myself.

>> reporter: just over 2.5% of aircraft pilots and flight engineers are african american, according to the bureau of labor statistics. so last year, stanislaus started giving free flights, often to kids of color. >> aviation is just, it's a very expensive career to get into. so it is definitely a barrier. >> reporter: he's part of fly for the culture, a non-profit that promotes inclusion in aviation. when you take a kid up for the first time, you see their reaction? >> oh, it's, it's priceless. >> this is the best day of my life! >> reporter: six-year-old boogie and his three-year-old brother tyler landed with mixed reactions. >> it was fun! >> reporter: it was fun! wait, what is going on with your ow up? >> yeah. >> reporter: why?yoll asleep in. >> yeah, that was silly.

>> reporter: why do you do it? >> because i love it. i'm sorry. i'm sorry. you know, i really want to be able to make a difference, and this is how i do it. it's like my purpose. >> reporter: a purpose that's already made a difference. michelle miller, cbs news, farmingdale, new york. >> ninan: and speaking of purpose, fly for the culture tells us that they are always looking for mentors and volunteers. you can learn more by going to fly for the culture.org. well, that's the "cbs weekend news" for this saturday. tune into cbs tonight for "48 hours." and remember the news continues now on our 24-hour digital network, cbsn, at cbsnews.com. i'm reena ninan in new york. for all of us at cbs news, thank you for joining us. good night. captioning sponsored by cbs

one bay area county has a higher measles rate. >> california has a $21 billion budget surplus. now the battle begins over how to spend it. tonight some homeowners in contra costa county are being warned clean up your weeds, ready to pay up. >> people are scrambling to meet a fire danger deadline by the end of the month. >> reporter: it doesn't take much for this to catch on fire.

given the wet winter, experts anticipate a very bad fire season ahead. this loud buzzing sound could be heard all over dan val, san ramon. >> sun up, sun down. weekends obviously. >> reporter: the signs to remind people the 3331st 39 is fast-approaching. >> defensible spaces around the homes. make sure the gutters are clear from dead vegetation. >> reporter: interim fire marshal steven healy says it takes a partnership with the community to prevent large fires. the owner here cleared out the drive. on the right, a fire hazard. >> that property owner every year hires goats. i expect to see goats in the next week or two. >> reporter: those who don't co