The culture of aviation, and addressing a critical problem in our nations skies. Ninan good evening. Im reena ninan. Theres heightened tension tonight between the worlds 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. Its very simple were going to be taking in more money than weve 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 doesnt know how to cut a trade deal. It is punishing the farmers throughout this country. Hes 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 americanmade company or from a chinesemade company. Reporter both sides say talks will continue. China says thatll 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, supercharging 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. Its going to be a little on the miserable side for moms. Were 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, were looking good. Ninan jeff, thank you. More than a year after the trump administrations now discontinued zero tolerance policy, many families remain separated. In tonights 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 sevenyearold angie is learning to count in english. Nine. . Ten. Ten, there you go thats also the number of months shes 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 administrations now discontinued zerotolerance policy. What was it like to be separated from your dad . speaking spanish reporter when youre 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 whats most important, he says. Its 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 youll 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 dont 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. Were talking about shaving off 30 minutes to three hours, easily, from our lab, endtoend 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 revenueproducing commercial drone flights approved by the f. A. A. The eight flights carry up to 200 samples a day. This quadcopter 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, its about a 45minute 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 turnaround times, and how important it is to get bloodwork in and the results turned back around, its 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. Googlebacked wing is the First Company to receive f. A. A. Approval for drone delivery of goods to businesses and homes. The appbased 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 techs 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 thats 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 venezuelas opposition leader, juan guaido, is seeking to open relations with the u. S. Military. The u. S. Is backing guaido in his campaign to oust president nicolas maduro. Heres 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 president s. This remains an alltoofamiliar sight for people who can no longer afford food. With inflation at more than one million percent, money is so worthless, this isnt enough to buy half a dozen eggs. Children are starving to death. Venezuelas Child Mortality rate has jumped 140 compared to 2008. Nairovis ortegas 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 havent had breakfast. Theyre going to eat these lentils today, for their main meal, and shes going to see if she finds food somewhere else. She said, its 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 days only meal. The program, called alimenta la solitaridad, or feed the solidarity, was created by harvardeducated venezuelan roberto patino. More than 300,000 children are in risk of dying because of the hunger crisis here in venezuela. Reporter patino 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 didnt have an earthquake. We didnt 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, its really hopeful for me. We find energy and we find the possibility and the will to move forward when we see the impact that were 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. Hes a peer of yours. Hes got a year older. Yes. You think hes right for this moment . I think im 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 its problematic. I think that. You dont have the kind of energy that i think is required, to be president. I think im not sure you have the intellectual acuity that you might have had in your 60s. Ninan you can watch more of Margaret Brennans 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 twoinch 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 wifes 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 youre looking down the road, youre 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 smiths full report about the manhunt for Peter Chadwick on an allnew 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, hes more than just a basketball superstar. You began your book by saying, its not so much Lebron Jamess incredible athletic ability, but its his awareness both on and off the court. How does he harnesth he is is a natural talent that he has, that i dont 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, didnt really have any money, and thats 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 yearold 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 didnt 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 adtime. And four to five years later, they get sold to apple for 3 billion, and guess whos 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 18yearold davion lee can remember, hes dreamed of soaring high. I looked up and saw an airplane, said mom, im going to fly that one day. Its 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 didnt 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, its a very expensive career to get into. So it is definitely a barrier. Reporter hes part of fly for the culture, a nonprofit that promotes inclusion in aviation. When you take a kid up for the first time, you see their reaction . Oh, its, its priceless. This is the best day of my Life Reporter sixyearold boogie and his threeyearold 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. Im sorry. Im sorry. You know, i really want to be able to make a difference, and this is how i do it. Its like my purpose. Reporter a purpose thats 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, thats the cbs weekend news for this saturday. Tune into cbs tonight for 48 hours. And remember the news continues now on our 24hour digital network, cbsn, at cbsnews. Com. Im 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 doesnt 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 fastapproaching. 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 dont co