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> glor: this is our western edition, and we are going to begin ton" property="og:description">
> glor: this is our western edition, and we are going to begin ton">
>> dr. king inspired my music, this is the "cbs evening news" with jeff glor. >> glor: this is our western edition, and we are going to begin tonight in san bruno, california, just south of san francisco, at the headquarters of youtube. there has been a shooting there. police say the shooter was a woman. they say she wounded two women and a man, her boyfriend, before taking her own life. john blackstone is on the scene for us tonight. john? >> at a news conference late this afternoon, police add few new details but revealed the female shooter was armed with a handgun. officers spent much of the afternoon searching through the youtube headquarters building here, but now say the building is secured. this terrifying day began with witnesses reporting 20 shots fired. >> all buildings associated with youtube -- >> reporter: with reports of active active shooter, youtube employees came running out of the buildings on this sprawling tech campus with their hands in the air and on their heads. this eyewitness saw the scene from a nearby fast food restaurant. >> then i saw the girl running out. and then she was shot in the leg. then she-- then the other people that were behind me, they opened the doors and let her in. >> reporter: multiple people were injured when a female shooter entered the building, reportedly with a targeted person in mind. police and federal agents quickly began surrounding the building. san bruno police chief ed barberini: >> we have one subject who is deceased with a self-inflicted wound, that at this time, we believe to be the shooter, but we're still following up on that. >> reporter: youtube employees were being patted down by police before leaving. geutube project manager todd sherman wrote on twitter: three victims were taken to san francisco general hospital. the video-sharing company has 1,700 employees and is one of the most prestigious places to work in silicon valley. owned by google, youtube already employed armed security guards around the campus before today's shooting. and san francisco general hospital reports those two women who were wounded, one in fair tndition, one in serious condition, and the apparent boyfriend of the shooter, as you said, jeff, in critical condition. >> glor: all right, john blackstone at the scene tonight. john, thank you very much. in our nation's capitol today, president trump proposed sending troops to the southern border to stop illegal immigration. ps have more on this story. here is chief white house correspondent major garrett. rr we're going to be guarding oir border with the military. it's a big step. >> reporter: without providing details, president trump said u.s. troops are needed to secure ice u.s.-mexico border until 700 to 800 miles of wall can be built. >> i think that it's something we have to do. >> reporter: mr. trump's predecessors took similar action. in 2006, president george w. bush sent 6,000 unarmed national psard troops to provide technical, engineering, and office support. president obama dispatched 1,200 members of the national guard to the southern border in 2010. in both instances, they did not act as law enforcement personnel. this so-called caravan of about 1,200 migrants moving through mexico appears to have sparked the president's interest in militarizing the border. >> now, the caravan, which is over 1,000 people, coming in from honduras, thought they were going to just walk right through mexico and right through the border. >> reporter: the migrants are primarily fleeing violence in honduras. some may seek asylum in mexico .r the united states. cbs correspondent manuel bojorquez spoke via video chat ne one caravan organizer, irineo mujica. >> reporter: the president linked the caravan and border security to the re-negotiation of the north american free trade agreement, or nafta, threatening harsher treatment of mexico as engotiations intensify. >> i said, "i hope you're going to tell that caravan not to get up to the border." and i think they're doing that, because as of 12 minutes ago, it was all being broken up. we'll see what happens. >> reporter: the national guard has received no notice to deploy to the border, and the department of homeland security has referred all questions to the white house. for their part, south american diplomats said the idea of placing the u.s. military on the rnuthern border would generate hostility toward mr. trump and solidarity with mexico at next week's summit of the americas in peru. jeff. >> glor: all right, major garrett, thank you very much. amazon has become a favorite target of the president. since he started criticizing amazon again last week, the company's stock has fallen 7%, a loss of $60 billion in market eelue. nancy cordes tells us it began md continues with the president's assertion that amazon is fleecing the u.s. postal service. >> amazon is going to have to pay much more money to the post office. >> reporter: amazon stock had mast begun to inch up this morning, when the president put astop to that with one tweet, insisting, despite the evidence, that "i am right about amazon costing the united states post office massive amounts of money for being their delivery boy." >> it delivers packages for amazon at a very below cost. >> i think that's a very incorrect perception. >> reporter: georgetown business school professor arthur dong says parcel delivery has actually been a rare bright spot for the struggling postal service, accounting for nearly a third of last year's revenue. >> the fact that amazon is their number-one customer nowadays is really a godsend to the u.s. postal service, because without amazon's business, the u.s. n stal service would be asking for a lot more subsidy. >> reporter: amazon won't say what it pays for shipping. a former member of the u.s.p.s. board of governors tells cbs news that amazon brass were tough negotiators and that talks in 2013 lasted for six months. but we do know that a 2006 law prevents the postal service from cutting a deal to deliver packages below cost, and contracts are regularly reviewed for compliance. >> amazon is getting away with murder, tax-wise. >> reporter: this isn't the sidet time president trump has targeted the online giant, whose dominance has come at the ndpense of brick-and-mortar ciores that commercial realtors rely on for rental income. >> you have retailers all over the united states that are going out of business. you look at some of these small towns where they had a beautiful main street with stores. the stores are all gone. >> glor: nancy is outside an amazon fulfillment center right now. nancy, i know a lot of details haven't been released. the postal service and amazon are not putting these out. but how much of this is the thministration just trying to get a better deal on the next negotiation here with the postal service? rv reporter: that could be one of the president's motivations, ivff. after all, typically, amazon would have a distinct upper hand in these negotiations. it does have other options, after all, like private shippers, and is even reportedly testing out its own delivery service, which could some day n come a competitor to the postal service. >> glor: interesting to follow. nancy cordes, thank you very much. rde first person was sentenced today in the special counsel's investigation of russian stddling in the u.s. election. dutch attorney alex van der zwaan got 30 days in prison and a $20,000 fine. he pleaded guilty to lying to yivestigators about his conversations with a former trump campaign official. van der zwaan is the son-in-law of one of russia's richest men. in oklahoma, public school teachers say it's a matter of math. more money is needed for toucation to help students in cle classroom, and they are taking their case to state lawmakers. var villafranca is in oklahoma city tonight. >> reporter: today, oklahoma governor mary fallin signed a bill giving teacher support staff, like teacher aides and janitors, a $1,250 raise. last week, she signed a measure that gave teachers a $6,000 pay raise, but only added an additional $50 million to school funding. teachers were asking for $200 million more. >> teachers want more. it's kind of like having a teenaged kid that wants a better car. >> reporter: true, but their car has been taken away over the list ten years. >> well, it has been a difficult time, and that's why i am very toud that this year we were able to get something done for our teachers. me this is drawing a line in the yend for the future of oklahoma. >> reporter: teachers turned into lobbyists, crowding the urllways and waiting in line to eret with almost every state lawmaker. >> so, do we need to go back to that other hallway and to the very end? t reporter: liz hoggett and her fellow teachers from the norman public schools went office-to- office, leaving notes and letters for legislators, asking for more school funding. >> is he going to be able to see us? >> reporter: they waited more than an hour to meet with their state senator. >> hi, senator. i am one of your constituents, ntd i really wanted to talk to you today. we have an appointment at 1:20. >> i know, but we are going to have to reschedule. >> reporter: but they had to leave for a roll call. the third-generation teacher says she is frustrated, but doesn't plan to give up. what do you want him to hear? >> i want him to hear that we are not going anywhere. that we're doing this for our kids. >> glor: omar, i know you've been there since the strike sgan. any end in sight for these protests? >> reporter: not really, jeff, because teachers and students plan to be back here tomorrow. in fact, some teaches were telling me they're willing to use their sick days to come down to the capitol so they can keep kessure on the lawmakers. jeff. >> glor: all right, omar, thanks. we move now to a murder mystery in new england. members of nathan carman's family claim he killed his grandfather and mother to collect a multi-million-dollar inheritance. carman has not been charged, but he appeared in court today. don dahler is following this case. >> reporter: nathan carman turned accusations of murder onto his aunts in a court hearing scheduled to stop him om gaining a family inheritance by digging up information into two unsolved s.mily deaths. >> what happened to your mother? what happened to your mother? >> reporter: in 2016, linda carman, nathan's mother, went missing during a boating trip. cthan carman was found and rescued eight days later. >> i just want to thank the public for their prayers, and for their continuing prayers for my mother. ep reporter: three years earlier, carman's grandfather, millionaire real estate developer john chakalos, was found shot to death in his connecticut home. carman allegedly owned the same r liber rifle used in his grandfather's murder, and is a suspect in the cold case investigation. carman's aunts believe that their nephew is responsible for heth deaths, and that he was fueled by a potential $7 million inheritance. carman chose to invoke the fifth amendment during today's hearing neen questioned about his gun and other financial documents that could provide clues about his role in his family members' deaths. eytorney dan small is representing the family. >> he refused to answer questions. us refused to take a polygraph exam. that's not the conduct of someone who cares deeply about his grandfather and wants to find his grandfather's murderer. >> reporter: carman has fired his attorneys and is currently representing himself, against e.e advice of the judge. jeff, judge david king says that the family attorneys may be allowed to depose carman at a future date. >> glor: all right, don dahler, thank you. there is a groundbreaking development in africa tonight. take a look at this video, the ground breaking open here. the rift is several miles long, and some believe it is a sign the continent is splitting in two, ever so slowly. here's chip reid with more on this. >> reporter: this giant crack in the earth opened up almost overnight, 50 feet deep and at its widest, 65 feet across, slicing through a highway and terrifying many who live in this area, just west of nairobi, kenya. so what caused it? well, it depends on what scientist you ask. >> we're seeing a crack that, in all likelihood, formed over many thousands of years, or hundreds of thousands of years. >> reporter: some scientists, including ben andrews, a geologist with the smithsonian, believe the crack was recently exposed by a rainstorm. but he says it was created by movement of the earth's tectonic plates, sections of the earth's crust that move about one inch a year. in 50 million years, it's believed, africa will look like this. in your view, it's probably evidence that africa is splitting in two. >> yes. >> reporter: other scientists, like earthquake geologist wendy bohon, while agreeing that africa is splitting in two, think the gash was created in a flash. >> i think it's an earth fissure, the same sort of thing that you see in arizona after heavy rainstorms. >> reporter: like this fissure, she says, which is in arizona. and they can happen suddenly? >> yes. they are the result of heavier torrential rains that come and wash away large portions of the dirt in the ground. to me, it looks pretty cut and dried. it wasn't the result of the tectonics. it was the result of the weather. >> reporter: a mysterious gash in the earth at the very spot where africa is being slowly torn apart. nip reid, cbs news, washington. >> glor: coming up next here on the "cbs evening news," our vr. jon lapook with a c.d.c. warning about nightmare bacteria. eria. the only one to combine a safe sleep aid... ...plus the 12 hour pain relieving strength of aleve. i'm back. aleve pm for a better am. a car you can command when does that require mind-control? no. just some mind-blowing engineers from the ford motor company and pivotal who developed fordpass, allowing you to 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>> reporter: for the first time in 2017, there was a nationwide survey, and they found that infections from these kinds of bacteria from these kinds of bacteria were more common than expected. co1 cases, with infections in places like the bloodstream, the lungs and the urinary tract. >> glor: and so what is the c.d.c. saying should be done about nightmare bacteria? >> reporter: well, lots of ideas. there's one really big, interesting idea, and it's what amounts to infectious diseases swat teams. so if there's an infection, they bring everybody together. the doctor, the patient, nurses, lab personnel, public health people, and they do things like isolating the patient, making eore people wash their hands properly. so simple, so important. and then, something that's not potuitively obvious-- testing contacts of people who seem to f fine. they're a contact of somebody who is infected, and maybe they, eyemselves, are harboring the emfection and yet not showing signs yet. these have all been shown to be very effective. >> glor: and interesting, you r:so think antibiotics are often way overused. y reporter: way overused. ou know, for example, patients come in, they have a cold that's caused by a virus, they're not treatable by antibiotics. don't ask your doctor for it, and the doctor shouldn't prescribe it. >> glor: dr. jon lapook, thanks very much. a tractor trailer is one of the biggest things rolling on the road, but there's trouble when it is stuck on the tracks. that story is coming up, next. is that story is coming up, next. hey scout, what's with the itchys and scratchys? 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>> that's what we were told. >> after an initial quick church of the a building -- after an initial quick search of the building they did a more methodical slow search of the building. >> we have a team of reporters that have been monitoring the developments. andrea, what can you tell us? >> reporter: veronica and alan, in the past our the chief of police, ed barberini has declared