. here's nbc's tom costello. >> my name is ashley. >> reporter: midmorning at johns hopkins all childrens hospital in st. pete. >> i'm going to start by listening to your heart. >> reporter: ashley shepherd is making the er rounds. >> when is the last time you had a treatment. >> reporter: as a especially trained pediatric physician's assistant, she is in high demand across the country. there's a reason she ended up here. the hospital was targeting her phone. >> i kept seeing johns hopkins all children's showing up. i started seeing what opportunities they had available. >> reporter: every time she drove to her old job? dallas, help wanted ads would pop up. it wasn't by chance. johns hop kins is using geofencing technology to find people whose online profiles indicate pediatric expertise targeting zip codes in seattle, boston, ohio and texas kind of like online shopping ads that keep following you. this is one of the ads, pediatric nurse practitioners and pa jobs showing up on somebody's facebook page. >> absolutely. we specifically targeted them around the social media platform for whate

costello covers nasa for us. he has a school story. >> this is a hard day for engineers in nasa, who have devoted their lives to kasini. watching it go up in saturn's atmosphere, hopefully getting us closer to knowing if there is life somewhere out there. >> and liftoff of the spacecraft to saturn. >> reporter: we have never seen it up close until. >> the long journey to saturn. >> this spacecraft catapulted into the cass most than rocketed towards the ringed planet. this is what it beamed back. 500,000 awe-inspiring images. it took even years. but it was worth the wait. bringing us an unforgettable up-close look at jupiter. and then, of saturn. >> no spacecraft has gotten this close to saturn. that allows us to make measurements that you just can't make when you're orbiting outside the rings. >> reporter: just four months ago, cassini became the first spacecraft to plunge between the rings. >> you feel like you could touch the rings. >> reporter: and beneath them, that's us, earth. nasa's unprecedented 20-year 5 billion mile journey, answering that cosmic question, are we alone. revealin

of negligence surfaced against the credit reporting come of pane. nbc's tom kos ole costello. >> notifying banks 200,000 customer credit card numbers were among those lost in the breach. public outrage continues to boil. in texas. mike cam's whip's information was stole twine years ago. with the equifax hack, they have frozen their reports. >> makes me angry i have to pay the credit bureaus money to do what they should have been doing to begin with. that's protect my information. >> credit scores are used for loans, credit cards. your ability to get a job. car insurance. rent the apt. turn on the power. sign up for a cell phone. >> what the breach points to. we need better control for consumers over the information in our credit reports. >> more allegations of. played the may hack on criminals that exploited a application in apatchy software. it issued urgent patch to fix it. two months earlier. march 7. >>> the equifax data, was due to their failure to install, the associated patches foreign the strut project. >> and telling nbc news it did not identify vulnerability until j