while facing ultimate pressure of battling cancer, these kids at the children's hospital at dartmouth hitchcockhe hospital's doctors, nurses and staff.

while facing ultimate pressure of battling cancer, these kids at the children's hospital at dartmouth hitchcock are stunning. lip-syncing through "roar" with the support of the hospital's doctors, nurses and staff. ♪ i've got the eye of the tiger a fighter ♪ the hit viral video in response to a fund raiser which totaled $650,000. ♪ you are going to hear me roar ♪ ♪ louder than a lion ♪ because i am a champion and you're going to hear me roar ♪ >> what great kids. finally tonight -- good news. today abc news launched our new upgraded phone app for iphone &roid. just another way to have >> breaking news in menlo park where 2 people walking their dog killed tonight after car crashed right into them. police say the driver was under the influence. >> good evening. all happened just before 7 on chalk street in menlo park. amma is on the scene with the latest. >> the man and woman have not been identified. we do know they are in their 50's. just out for a walk with their dog when hit and killed by a woman police say was driving drunk. now we are quite a distance away from the 16 but you can take a bet

. ♪ ♪ you're going to hear me roar >> children's hospital in dartmouth, hitchcock hammon put their own's video "roar." three performers, welcome, ladies, all three of you. what an amazing day it must have been for you. the whole world has been watching this video. i watched it this morning, it's one of the most moving and uplifting things i've seen in a long time. megan, you're 16. what was the idea behind this? >> it was to have everybody who has gone through rough times and hurdles that they have to jump over to come together and to just share our message, that even though we might have things to jump over, we roar. we really do. >> well, you certainly do roar. and maggie, have you heard from katy perry at all? >> no. >> no? i can't believe it. katy if you're watching i know you love watching this show, get on the phone. tell these girls what an amazing job they're doing. because it's one of the great videos i've seen in a very long time. let me come to you, holly. you must be very proud of all the children who took part in this. >> we are. i mean, every single day in the work that w

. ♪ ♪ you're going to hear me roar >> children's hospital in dartmouth, hitchcock hammon put their ownee performers, welcome, ladies, all three of you. what an amazing day it must have been for you. the whole world has been watching this video. i watched it this morning, it's one of the most moving and uplifting things i've seen in a long time. megan, you're 16. what was the idea behind this? >> it was to have everybody who has gone through rough times and hurdles that they have to jump over to come together and to just share our message, that even though we might have things to jump over, we roar. we really do. >> well, you certainly do roar. and maggie, have you heard from katy perry at all? >> no. >> no? i can't believe it. katy if you're watching i know you love watching this show, get on the phone. tell these girls what an amazing job they're doing. because it's one of the great videos i've seen in a very long time. let me come to you, holly. you must be very proud of all the children who took part in this. >> we are. i mean, every single day in the work that we do, whether you're

this inspirational video of hope from children and staff at dartmouth hitchcock children's hospital.than 300,000 views in just a couple days. ♪ you're going to hear me roar >> and that's today's hit play. >>> what is going on with the people in charge of our nation's nukes? first, these two commanders get in trouble for misbehavior. and now officers entrusted with launch codes are caught napping while the security door is left open? i'm brooke baldwin. the news is now. >>> two days, two math teachers killed in america. allegedly by students. what the murders say about security in our nation's schools. >>> and for the first time ever, the majority of americans are in favor of legalizing pot. but is this the case of be careful what you wish for? >>> plus, the dramatic sentencing for the man who confessed to driving drunk on youtube. >> i'm begging you, please don't drink and drive. don't make the same excuses that i did. >>> and the white house fires a national security staffer for tweets insulting president obama's cabinet and advisers. but, he didn't stop there. >>> i'm brooke baldwi

these are patients and staff members at dartmouth hitchcock medical center in new hampshire, roaringperry's rendition of "roar." ♪ i am the champion and you're going to hear me roar ♪ >> the half hero marathon and 5k videos include lots of lip-syncing, dancing, of course, roaring. we have to give a shout out to the tremendous staff that take care of these little angels at all the children's hospitals and the units around the nation because you do tremendous work, we know how important and hard it is. those are our headlines at the this hour. over to you, chris. >> great way to bring attention to people who deserve it. let's talk about the hero who emerged from the shooting at a nevada middle school, michael lansbury, beloved staff member, marine, husband, he talked down a shooter, defused the situation. it cost him his life but he may well have saved countless others. chief master sergeant james ross supervised lansbury joins us from sparks, nevada. thank you for joining us, sir. appreciate it. >> thank you. >> what can you tell us about michael? we want to understand him as more tha