it must be. it must be. thanks. we will catch you at 6:00. and we will be back at 6:00 for another hour long version of the news. >> ninan: the search for the black boxes from egyptair 804-- we're told the devices, which could reveal why the plane went down, have been located. >> and she said, "oh, well, i tried to retract." >> ninan: also tonight, donald trump and hillary clinton face off on gun control. >> back off! >> ninan: a new york city police ificer is stripped of his gun and badge after allegedly pointing his weapon at spectators. a dramatic spike in the number of pregnant women in the u.s. who have tested positive for zika virus. and, it's hard to watch, but wildlife officials say this is the best way to save rhinos from poachers. captioning sponsored by cbs this is the "cbs weekend news." >> ninan: good evening.

i'm reena ninan with a western edition of the broadcast. >> data recorders from egyptair 804. the plane went down friday killing all 66 on board. the plane's data recorders or black boxes have been recovered, other reports say the devices have not been located. holly williams is in alexander, egypt. >> reporter: the first images of debris from egyptair flight 804 show the plane's wreckage-- a life vest and luggage. egyptian authorities say human remains were also found in the search area in the southern mediterranean sea where they're still looking for more wreckage and the bodies of those who were on board. the plane's flight recorders, or so-called black boxes, could help answer what happened on the passenger jet with recordings

from the cockpit in the minutes before the plane crashed. phillip balm is the editor of an aviation magazine. >> presumably, the pilots were talking about the situation at that point in time between each other, as they were desperately trying to aviate or fly the aircraft and recover it. we'll also get all of the readings from all of the different pieces of equipment on hoard the aircraft, which should give us an indication of what was going wrong. >> reporter: it was after 2:00 a.m. local time on thursday that the plane suddenly swerved, turning 90 degrees to the left, then spinning in a circle to the right, all the while plummeting, falling off the radar and into the water. data published by avherald, an aviation industry web site, appears to list automated transmissions from the airplane just before it disappeared from radar screens. they indicate smoke in the bathroom and in the avionics bay, then alerts from the

plane's flight control systems. >> it implies there was something more significant that niok place. it's very rare that you will have a fire that will simply, you know, take over the aircraft and result in the aircraft actually, ultimately, crashing in the space of three minute. >> reporter: according to aviation experts, a loss of pressure could also have set off the smoke alarms. mechanical failure, human error, and terrorism are all possible causes of this crash. and, reena, so far, none of have been ruled out. >> ninan: holly williams in alexandria. thank you. more on the egyptair investigation, we turn now to mark phillips at charles de gaulle airport in france. >> reporter: there were 15 french citizens among the passengers on the plane. as it happens, just this morning here, the french foreign minister, jean-marc ayrault, met with about 100 family members of the victims, and i'm afraid he could not provide the answers that they were looking for, despite the new information that has been coming from the signals sent from the plane.

the phrase that the french are using here is that there is still no favored hypothesis. in other words, they're keeping all of their options open. here at charles de gaulle, they've tightened security. they're doing an investigation to see whether there could have been anything untoward put on that plane, but, thus far, there are no conclusions that score, either. >> ninan: mark phillips at charles de gaulle airport in france. mark, thank you. and there's breaking news tonight from afghanistan where the u.s. military carried out an airstrike targeting taliban leader mullah akhtar mansour. officials are not confirmed reports that mansour was killed in the attack near the pakistani border. a gunman who caused a security scare at the white house friday remains in the hospital. authorities say jesse oliveri of ashland, pennsylvania, ap proached a checkpoint and refused to drop his gun before secret service officers shot him. a source tells us oliveri may have been attempting a so-called suicide by cop.

gun control is once again a major issue in the race for the presidency after donald trump was endorsed by the national rifle association friday. hillary clinton has an event in florida today addressing mothers who lost children to gun violence. here's julianna goldman. >> crooked hillary clinton is the most anti-gun, anti-second amendment candidate ever to run for office. >> reporter: armed with his n.r.a. endorsement, donald trump spent less time detailing his own gun proposals and instead tore into hillary clinton. >> hillary wants to disarm vulnerable americans in high- crime neighborhoods, whether it's a young, single mom in florida or a grandmother in ohio. >> reporter: clinton hit back, tweeting, "you're wrong, donald trump. we can uphold second amendment rights while preventing senseless gun violence." with a majority of voters saying ann policy is important in the november election, trump and clinton are drawing their battle lines. >> the gun lobby is the most powerful lobby in washington.

>> reporter: the democratic frontrunner has called for stricter gun laws, including esiversal background checks and gun-free zones for schools and public facilities. >> they have figured out how to intimidate elected officials at all levels who basically just stop thinking about this problem because they're too scared to stand up to the n.r.a. >> reporter: trump is proposing getting rid of gun-free zones, has called for making concealed carry permits valid across the country and is against an assault rifle ban. but after the sandy hook elementary school massacre, trump applauded president obama's speech calling for stricter gun laws, tweeting, "president obama spoke for me and every american." tonight, clinton will be at an event with parents who have lost children to gun violence, including the mother of trayvon martin. reena? >> ninan: julianna goldman in washington. julianna, thank you. george zimmerman has apparently sold the gun he used to kill trayvon martin. a bar owner in daytona, florida,

says he bid $150,000 for the gun and thought he won the auction, but he says zimmerman later claimed someone else offered $250,000. zimmerman's web site says the auction is over and the winning bidder is being contacted. the c.d.c. says 279 pregnant women in the u.s. and its territories have tested positive for the zika virus. most zika cases in the u.s. so far have been in people who traveled from latin america, but health officials expect mosquito-borne infections will occur here soon. cbs news chief medical correspondent dr. jon lapook is here. dr. lapook, we're talking about more than 150 women, pregnant women who have tested positive for the zika virus. >> reporter: right here in the united states. >> ninan: right here in america. how concerned should women be? >> reporter: well, perspective, first of all. these women are people who have gotten the zika virus because of travel, because they went somewhere else, they got infected down in, say, brazil and then came back up here.

and in a few cases, it has been through sexual transmission. but so far, as far as we know, there has been no case of a mosquito in the united states becoming infected with the zika virus, turning around and biting somebody who is uninfected and giving them what is called local transmission of zika. if that happens, there is going to be a lot of concern. >> ninan: how will we know if mosquitos, when they are infected with the zika virus? >> reporter: we may not know right away, and that lag is something that is of concern to public health officials. i mean, if that happens, somebody comes from brazil, say, they come up here, they've got zika in their blood. they infect a local mosquito, that mosquito bites somebody case. well, since 80% of the time, we think, people have no symptoms, roat person may go around having zika in their blood without us anowing it, and then another mosquito may bite that person and get infected, and we start having local transmissions. so, what public health people are doing is they're setting ubaps. we were down in houston in harris county, and they went out there and put traps in the sewers and traps out in the wetlands.

it's doing carbon dioxide, and certain types of chemicals and they get attracted and come in. they take them, they smoosh them up, they take them to a lab and say "what's inside? and what kind of viruses?" kd if they find a zika virus in a local mosquito, they're going to sound the alarm. >> ninan: dr. jon lapook, thank you for joining us. >> reporter: nice to talk with you. >> ninan: a new york city police officer is under investigation llter cell phone video showed him pointing his gun at a crowd of people watching officers make an arrest. demarco morgan has the latest. >> reporter: this cell phone video shows plainclothes officer risel martinez forcefully arresting 21-year-old deyshawn bettway, suspected of riding an illegal dirt bike. >> he has him in a headlock, between his legs, so his head is in between his legs and he's squeezing. >> reporter: ronnie pinkerton jr. recorded the incident thursday on his cell phone. you see the n.y.p.d. officer pull out his gun-- >> back off! >> reporter: --and point it at bystanders. >> when i saw the gun, my heart raced a little bit. i was like, "is he really going to shoot? is he going to shoot right now?"

>> reporter: in a separate video taken just a few moments later, martinez is seen punching a spectator in the face. >> he acted like he was looking somewhere else. so as soon as he walked out, he hit him. >> reporter: the man who got punched, 19-year-old jahnico harvey, was charged with menacing and disorderly conduct. >> it's just another example how police can, honestly, do whatever they want and get away with it. how i feel, personally. >> reporter: the officer seen pointing his gun and delivering that sucker punch has been stripped of his gun and badge and placed on modified assignment while the nation's largest police department investigates his actions. reena? >> ninan: cell phones documenting so much now, demarco. >> you bet. >> ninan: thank you so much. a san francisco police chief was forced out of office this past week over accusation of racial bias in the police department. carter evans tells us about the challenge the new chief is facing. >> you got a good captain. >> reporter: acting san francisco police chief toney chaplin has his work cut out for him. >> reforms, reforms, reforms.

>> reporter: chaplin took on the job thursday after mayor ed lee told embattled chief greg suhr it was time to step down. >> the progress that we have made has been meaningful, but it hasn't been fast enough. >> reporter: the move came within hours of the city's latest officer-involved shooting, where san francisco police killed an unarmed 29-year-old woman suspected of stealing a car. thursday's shooting was the latest in a string of racially charged incidents that have sparked outrage in the bay area. the protests gained momentum after this video surfaced last december. >> oh, my god! drop it! >> reporter: police opened fire on a man holding a knife. five officers fired more than 20 shots. >> oh, my god! >> reporter: court documents also revealed several officers exchanged text messages littered with racist language. chaplin, a 26-year veteran of the san francisco police, was already leading a task force to

reform the department, and there are two things he wants to implement immediately: >> the body camera rollout so that we have another set of eyes, and the other thing is our use-of-force policy. >> reporter: the acting chief has the support of the police union and the n.a.a.c.p. but, reena, chaplin still won't say if he's willing to be the city's permanent police chief. >> ninan: carter evans in los angeles. thank you. a giant fuel tank from the defunct space shuttle program was slowly hauled through the streets of los angeles today. it will be displayed at california's science center along with the retired shuttle "endeavour." the tank was shipped to california from louisiana through the panama canal. a solar-powered plane is flying to dayton, ohio, tonight. "solar impulse two" took off from tulsa, oklahoma this morning on the latest leg of its journey around the world. coming up, wildlife rangers take drastic action to save rhinos from poachers, when the "cbs

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>> ninan: south africa's rhino population is under siege. poachers are killing three a day and selling the horns. debora patta visited a private game reserve where rangers are taking drastic steps and controversial action to save rhinos. >> reporter: these terrified rhino run for their lives. their horns have placed a deadly bounty on their heads, but the men hunting them are not poachers. nimon naylor is phinda reserve's head ranger. he gives the order to tranquilize the rhino. the drug quickly takes effect-- a drunken stagger before the rhino is blindfolded to dull his senses. it's hard to watch, but dehorning the rhinos could save their lives. they're not in any pain.

it's like filing a human nail. >> 25. >> reporter: this rhino horn is what this war is being fought over. it is still so valuable to poachers that even after it's been removed, it is immediately whisked off the property and taken to a secret location out of the reach of criminal syndicates. in some parts of asia, the rhinos' horn sells for about $150,000. veterinarian mike toft: >> i would rather see this little guy upright in two years' time than in a ditch, upside down, bloated, dead, having had his horn poached. so, for me, it's a no-brainer. >> reporter: the rhinos are sprayed with a purple disinfectant, the mark of rervival. >> okay, right, we're ready to wake up. he's looking, looking 100%. he's nice and relaxed. >> reporter: the horn will grow back in a few years, although it will become increasingly rare to see a rhino with its horn on this reserve.

but it may be the only way to save the species. debora patta, cbs news, phinda game reserve, south africa. >> ninan: extreme measures to counter poaching. the "cbs weekend news" continues in just a moment. moment. allergies can distract you. so when your symptoms start... doctors recommend taking non-drowsy claritin every day of your allergy season for continuous relief. with claritin you get powerful non-drowsy relief, 24 hours a day, day after day. and with fewer symptoms to distract you... you can focus on the extraordinary things you do... every single day. live claritin clear. introducing clarispray nasal allergy spray. new from the makers of claritin© with a different ingredient. i thought my bladder leakage

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crosshairs." 12 c.i.a. directors offer candid views on the war against terrorism. >> i found that i was making decisions on life and death. >> you are now free to engage the vehicle. >> those decisions are never easy, and, frankly, they shouldn't be easy. >> anything except full confidence. >> the keepers of america's secrets, the spymasters, shared for the first time their passionate disagreements about the agency's past, its current mission and its future. >> let me bare my soul just a little bit more. >> in a conflict against a ruthless enemy, what are the rules for america's spymasters? >> clear to engage. >> does the c.i.a. go too far? >> going to town, man. >> or not far enough? >> we have people chopping the heads off christians. i would bring back waterboarding, and i'd bring back a hell of a lot worse. >> if some future president is going to decide to waterboard,

he'd better bring his own bucket because he's going to have to do it himself. the agency is not going to do this again. ut our constitution does prohibit cruel and unusual treatment. if it's cruel, we shouldn't be doing it. >> the question people need to ask themselves is, ten years from now, will people be asking them the same questions about the use of these drones? >> this administration prefers killing terrorists rather than capturing them. >> he is killing more people than he needs to, and we'd be better off capturing some of them and interrogating them. >> these are tough decisions, but, you know, this is a war. god forbid this country faced another 9/11. you know what the first question would be-- "why the hell did you let this happen? why the hell did you let this happen?" >> ninan: you can watch "48 hours presents: the spymasters"

tonight on cbs. it is a joint production of showtime and cbs news. next, on the eve of president obama's arrival in vietnam, the ghosts of saigon. with usaa is awesome. homeowners insurance life insurance automobile insurance i spent 20 years active duty they still refer to me as "gunnery sergeant" when i call being a usaa member because of my service in the military to pass that on to my kids something that makes me happy my name is roger zapata and i'm a usaa member for life. usaa. we know what it means to serve. get an insurance quote and see why 92% of our members plan to stay for life.

try cool mint zantac. hey, need fast heartburn relief? it releases a cooling sensation in your mouth and throat. zantac works in as little as 30 minutes. nexium can take 24 hours. try cool mint zantac. no pill relieves heartburn faster. msame time tomorrow, fellas!? new dr. scholl's stimulating step insoles. they massage key pressure points with each step, for all day comfort that keeps you feeling more energized. dude's got skills. new dr. scholl's stimulating step insoles. unless you have allergies. flonase is the first and only nasal spray approved to relieve both itchy, watery eyes and congestion. no other nasal allergy spray can say that. go ahead, embrace those beautiful moments. flonase changes everything. ob ninan: president obama is on his way to vietnam tonight. he's only the third sitting u.s. president to visit the communist nation since the end of the vietnam war. the visit is aimed at strengthening economic and

hecurity ties with vietnam and increasingly an important player in southeast asia. so on tuesday, the president will visit ho chi min city, formally saigon. david martin with a remarkable ytory from that dark chapter in u.s. military history. >> reporter: if you had to boil down the entire vietnam war to one moment in time, it would be 5:20 in the morning of april 30, 1975. >> it was a microcosm of the whole war. dere's no doubt about it. i mean, we promised the vietnamese for years and years, "don't worry, we're with you all the way." >> reporter: army captain stu herrington had been herding panicked south vietnamese aboard the last helicopters out of the american embassy in saigon, and he had promised them over and over. >> "as long as i'm here, you don't need to worry." >> reporter: but then, orders came straight from president ford. >> "we've got to go. it's a presidential order.

and the ambassador's already gone, and there's nothing we can do about it." >> reporter: before he snuck away to a helicopter, harrington uttered these less-than-immortal words to the waiting vietnamese. >> "excuse me, i have to take a leak." >> i never saw him again. >> reporter: bien pho was one of the 400 left behind. he was sent to an education smp. what was education camp like? >> prison. it's a nice, fancy word for a prison. >> reporter: bien made it to the u.s. in 1979, married, got a job and discovered a talent for woodworking. herrington continued on with his army career. >> there wasn't an april that went by for the better part of 37 years that i didn't think about that or what i would say to one of these people if i ever met them. >> reporter: then he got a phone call. >> i said, "stu, this is bien pho. i don't think you know me.

but i was one of the ones that got left behind." >> and i felt like i at least needed to explain and apologize, but he wasn't really wanting explanations or apologies as much as to call me up and to say, "i'm okay. i did fine. and don't worry about it." >> reporter: it's now been 41 years since herrington ended the vietnam war with his cheap little lie to bien pho. but seeing them walk together past the vietnam memorial tells you the only way to really end a war is through forgiveness. david martin, cbs news, washington. >> ninan: forgiveness, they say, an attribute of the strong. and that's "cbs weekend news" for this saturday. the news continues now on our 24-hour digital network, cbsn, at cbsnews.com. i'm reena ninan in new york. from all of us at cbs news, thank you for joining us. good night. captioning sponsored by cbs captioned by media access group at wgbh

access.wgbh.org ashes. up in flames. a three-alarm fire reduces a row of oakland businesses to ashes. they have succeeded in getting the police chief fired. tonight the frisco five have a new target. mayor ed lee. and a violent takedown by a bart officer turns out to be $1 million mistake. good evening. transit officers were trying to restrain a drunken passenger when they body slammed her to the ground so hard she broke bones in her face and now bart has agreed to pay. a seven figure settlement. >> brian, bart will pay $1.35 million and bart says it

accepts all responsibility for what happened to megan sheahin in 2014. this is a megan admittedly drunk waiting for the train. she didn't appear as if she could care for herself and was arguing with officers who found her on bench in the station. officers arrested her on suspicion of public intoxication and resisting arrest. despite her behavior, megan said nothing she did justifies what happened next at the santa rita jail. >> doesn't touch me like that. >> oh! >> in these videos we see a bart police officer slam her face first into the floor. that officer said in a police report megan turned towards him and violently punched his face and to protect himself he used a, quote, armbar, takedown and guided her to the ground, i had a gash above my left eye and i had a few stitches there. i