as cynthia mcfadden reports, they say it could save tens of thousands of lives each year. >> reporter: when it comes to medical emergencies, san antonio, texas and birmingham, alabama do things differently than 99% of the country. they carry blood on board at least some of their emergency vehicles. so does palm beach county, florida. the district fire chief there says he has very personal proof, blood on ambulances saves lives. >>ly >> i had to be carried. >> reporter: several days after having her tonsils out, she lay bleeding in her father's arms, losing blood. >> reporter: without the blood, she would not have made it to the hospital. it is the blood that comes directly out of a donor's arm. >> 30 seconds after that first pump, izzy went from being unconscious to being alert and looking around. how were you before you got the blood? uh-huh. and when you got the blood, how were you? >> reporter: how many izzys might be saved by putting universal donor o-negative blood on rescue vessels nationwide? >> conservatively, tens of thousands. probably more than that. 40,50, 60,000 people. >

as cynthia mcfadden reports, they say it could save tens of thousands of lives a year. >> america oneparting. >> reporter: when it comes to medical emergencies, san antonio, texas, and birmingham, alabama, do things differently than 99% of the country. they carry blood onboard at least some of their emergency vehicles. so does palm beach county, florida. the district fire chief there says he has very personal proof blood on ambulances saves lives. >> i had to be carried in a bed. >> reporter: several days after having her tonsils out, his 6-year-old daughter izzy lay unconscious in his arms after vomiting blood. >> what's the emergency there? >> my daughter is bleeding. make sure the rescue ems has whole blood. >> reporter: they did. without it, doctors say, she would not have made to it the hospital. whole blood is simply blood that comes directly out of a donor's arm. >> 30 seconds after that first pump, izzy went from being unconscious to alert and looking around. how were you before you got the blood? uh-huh. and when you got the blood, how were you? >> reporter: how many izzys mi

don't miss cynthia mcfadden's investigation on toxic water at camp lejeune, and its impact on women debutinging, everyone. i'm lester holt. please take care of yourself and each other. good night. more good afternoon. i'm

cynthia mcfadden reports. >> we have three cases to review. >> reporter: the medical staff gathered aroundable at university hospital here in san antonio, texas, meet once a week at dawn with just one purpose in mind, saving lives. >> a patient that has been ruled out to have accreta. >> reporter: dr. kaitlin martin is one of them. the lives she and others are determined to save, pregnant women but increasingly diagnosed condition called placenta accreta occurring in 1 in 500 pregnancies. >> basically the placenta won't detach from the uterus and causes massive hemorrhage in many cases. >> the pregnancy was fine until it wasn't. >> reporter: women like bianca who at 20 was pregnant with her second baby. the first had been delivered by c-section, which is the most common precursor to the condition. >> it didn't feel like my first pregnancy at all, and they were telling me it's normal. >> reporter: so, she went online to see what she could find. >> that's when i found out about placenta accreta, and i looked up rates of survival for that, and it's terrifying. >> reporter: seven out of every

their stories got the attention of nbc news senior investigative correspondent cynthia mcfadden and environmentalt erin brockovich. what they found was a decades long tale of lies, deception, contamination and cover ups. you know, one of the things that becomes so apparent is that while cancer and kidney failure and these kinds of things take decades to develop, these babies were dying in real time. and if someone had bothered to notice, maybe so much of the tragedy that followed could have been avoided . so it's the cover up. it's always the cover up as erin brockovich says, so brilliantly, brilliantly in the film. and i think the hope is never again. you can watch baby heaven, the buried stories of camp lejeune tonight at 6:00 on nbc news. now we continue to amplify the aanhpi community and while museums are often associated with looking to the past, one in san francisco is embarking on a multiyear plan to evolve into an experience centered institution. nbc bay area's mike inouye is here with more on how they're doing it. this week, we spoke to emiko usui, deputy director and chief experience o

don't miss cynthia mcfadden's investigation on toxic water at camp lejeune and its impact on women, debutinging, everyone. i'm lester holt. please take care of yourself and each other. good night. biden about to touch down in mountain view. we are live at moffett field as the president comes to town for two major fundraisers. the first lady is already here. also, the oakland airport is moving forward with its name change. despite the threat of a lawsuit from san

don't miss cynthia mcfadden's investigation on toxic water at camp lejeune and its impact on women, debutinging, everyone. i'm lester holt. please take care of yourself and each other. good night. ♪♪♪ ] ♪ she's dressed to kill in a dress that he bought her ♪♪ ♪ she wouldn't care if he walked in and caught her ♪♪ ♪ she's come to dance a dance or two ♪♪ ♪ there's no telling by the night is through ♪♪ ♪ she found out the hard way about him ♪♪ ♪ she's out to find out how she'll do without him ♪♪ ♪ her hands are shaking, her heart is pounding ♪♪ ♪ by the way she's drinking, his memory is drowning ♪♪ ♪ cause she's not the cheating kind ♪♪ ♪ she's been cheated one too many times ♪♪ ♪ oh she's never fooled around ♪♪ ♪ he still lying, she's through crying ♪♪ ♪ she's not fooling now ♪♪ [ ♪♪♪ ] ♪ oh she's not the cheating kind ♪♪ ♪ she's been cheated one too many times ♪♪ ♪ oh she's never fooled around ♪♪ ♪ he's still lying, she's through crying ♪♪ ♪ she's not fooling now ♪♪ [ cheering and applause ] [ cheering and applause ] >> kelly: welcome to the kelly clarkson show, give it up for my band! i love