the reverend al sharpton will be one of the speakers at the funeral for alton sterling. sterling was shot and killed during an altercation with local cops outside a convenience store. the death sparked protests and a deadly ambush that led to five police officers dead. >> reporter: while he's preparing to build his father on saturday, he's thinking about the protests around the country and about that ambush of police in dallas, which in some part was motivated by what happened to his father. his father's death here at this

convenience store in baton rouge, louisiana. we saw a man far beyond his years. >> i want everyone to know nation wide, everyone in this world that alton sterling was a good man. no matter what anyone else has to say about him, i know in my heart he was a good dad. >> the individual involved in his murder, took away a man with children. >> reporter: i'll never forget that image of a you whaling on the side of your mom. >> when i put my arm around her, it's like somebody else had touched me, like i had another hand laying on top of my hand and nobody else was touching me. and it was like at that moment i knew my daddy here. he right here. we're standing here as a family together once again and i started crying like i know i

can't physically have him back so i know i had to cry to be like i want my daddy back. >> if you had an opportunity to say one last thing to your dad, what would it be? >> i love you so dearly. >> reporter: what is your opinion of police in general these days? >> police in general. all police aren't bad. they all aren't bad. there are some that aren't bad but all aren't bad. how i feel, i feel all police shouldn't be punished for other police's crimes. the police in dallas, texas, they didn't deserve that. because nobody knew if they had kids to go home to. those kids need their parents. >> reporter: people around the

country have been protesting because of what happened to your dad. what would you say to them? >> continue protesting but what i ask if you truly love my father, i want everyone to protest the right way. protest in a peace. not in violence. not beating the police, not police beating the people. that makes no sense. that makes things worse. you have to make things better by making peace. m to the sharks! yay! and take all of his gold! and take all of his gold! ya! and hide it from the crew! ya...? squuuuack, they're all morons anyway! i never said that. they all smell bad too. no! you all smell wonderful! i smell bad! if you're a parrot, you repeat things. it's what you do. if you want to save fifteen percent or more on car insurance, you switch to geico. it's what you do. squuuuack, it's what you do. hey spray 'n wash is back...ews? and even better.

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each year thousands of americans suffer traumatic brain injury. a lot of times they're left in what's called a persistent vegetative state. one young man fought all the way back from that. and here's the story. >> reporter: despite what dillen rizzo may say, his bowling skills are pretty good, especially when you consider what dillen has been through. did you guys ever have a doubt that he'd be back having beers with you guys? >> no. >> it wasn't necessarily a doubt. the reports we were getting from the parents were he shouldn't be alive right now. sfwlrks five year . >> reporter: five years ago dillen rizzo, then 19 was on his way to his friends to play video games but his car hit a black

ice and he spun into a telephone call. >> the poll seemed to hit him directly in the head and from there, he went forward and hit the wind shield and had more damage on the other side. so first impact and second impact. >> where dillen sat, this big indianitatii indentation in the car. >> reporter: within hour, neurosurgeons had removed part of his skull to make room for his brain to swell but dillen slipped into a deep coma. >> i remember standing and not being able to move my feet. it was extremely surreal. >> we didn't really know what was going to happen. >> reporter: he was an accomplished track star. dillen's the one with the "o"

painted on his chest but the accident had done a shocking amount of damage to his brain. he remained in his coma for more than two weeks. he did finally open his eyes but he wasn't aware of his surroundings. he had transitioned into what's called a vegetative state. a month later, there hadn't been much improvement. they broke the news thought unless he came out soon, he would likely stay in that vegetative state for life. >> our family was in the waiting room and i said we can't come out and tell our family that. i can't even say these words. i can't say it. >> reporter: but this man, not a medical doctor, but a researcher brought in to study the case thought dillen's brain might just need more time. >> we were sort of lumping everyone into the this vegetative state category. >> reporter: he's a neural psychologist at the spaulding

rehab rehabilitation hospital . he warns of a rush to judgment in cases of consciousness. >> 40% of individuals diagnosed with vegetative state actually retain some conscious awareness. that's a fairly alarming number. >> reporter: he thought dillen might be one of those cases and given the right therapy, might pull himself out of the fog. >> the addage is simply by exercising it is not going to help it. >> follow it with your eyes. >> now there's evidence that if you do rehearsal of a particular behavior, including in a damaged brain, it may well get better. >> you can do it, dillen. sfwlr >> reporter: dillen was moved to the pediatric unit where they started working him hard. they helped him stand, tried to get him to walk, eventually even

to climb stairs. >> he never said no to any challenge. physically, anything you ask him to do, any medications, shots, whatever it was. >> reporter: it was two years after the accident when we met dillen for the first time. not in a nursing home but back in his own home. the boy who wasn't supposed to be able to walk or talk took me down to his basement to play fusball. very good. you've confounded all the experts. >> i have. yeah. sfwlr >> reporter: talking was difficult but he could string a few words together. >> i feel great. >> reporter: yeah? >> yeah. >> reporter: and you're making progress every day? >> yeah. >> reporter: and you can tell? >> yeah.

>> great to see you . >> reporter: his medical team was pleased but not satisfied. not yet, anyway. they kept pushing dillen to work even harder. on this day, an occupational therapist was helping him make muffins. >> muffin tin, baking cups. can you find those. >> reporter: his movements were slow but with help, he did it it. >> bell's gone off. >> every day you see something new that he wasn't doing before. >> reporter: we watched as he learned to write again too. and work on his memory. >> do you remember mary jane's email or phone number? >> mary jane@gmail.com. >> very good. >> reporter: even when it hurt, dillen was always thumbs up. this past summer we decided to

check back in on dillen again and guess where we found him. you really seem to love it. >> i do love it. >> reporter: back at his high school track. where he's a volunteer assistant coach. on a scale of 1 to 10, where would you put your recovery? >> probably 8. 8 or a 9. i'm doing very well. >> reporter: we went to the ymca with him too where he does weight training at least once a week. when you're watching that, what are you thinking? >> it's amazing to see the amount of weight he can actually lift because it took weeks and months just to be able to get him to lift his right arm. >> reporter: but that's not what dillen is most proud of. what do you notice is the

biggest improvement? >> i can talk much better. before i would just go yeah. it was awkward. >> reporter: you can have a conversation. things happen quicker in your head? >> a little quicker. slowly but surely it's getting better. i'm good but not that good. i want to be more intelligent. >> if you see a question that's asking when? >> time. >> great. >> reporter: he's the first to admit he's got a ways to go. >> so, this is a really nice improvement. >> yeah, it is. >> you've done great. >> reporter: tracy, dillen's mom is careful to keep her expectations in check. >> i want him to be able to take care of himself in the future and i know he would love to have a family some day. that's something i'm hoping will happen for him. >> reporter: that's the next goal, more independence.

>> and a girlfriend. he wants a girlfriend. >> reporter: dillen's not ready for a full-time job and can't live alone because cooking is a challenge and needs help managing his long list of medications and his wounds that are still healing. joseph contends there are likely parts of his brain that will never recover but what his case suggests is that for some people being in a vegetative state may not be as persistent as once thought. >> for somebody with a disorder of consciousness, not considered permanent until a year and now we know the small percentage, 15% will actually recover after one year. >> reporter: his amazing journey has surprised everyone, frechie, family and doctors.

the only person not surprised by it all is dillen rizzo himself. you sort of knew you were going to get better. >> that was guaranteeable.

if you're traveling this summer, the tsa says the average wait is less than half an hour. but there's a way for you to skip the line altogether. here from baltimore washington international airport. >> reporter: they call it clear and the idea is to use these machines to get you to the head of the security line as quick as possible. they see a future with no boarding pass, id, all you would need is your fingerprint and your bags. >> please inter your eyes. >> reporter: this is the latest way to beat the airport security line. >> so, press both thumbs on that

black pad. >> reporter: it's a private company using biometric authentication. and then leave that passenger around the long line of people waiting to have their id's checked by the tsa and right to screening. >> the stress, anxiety, hassle is a meaningful experience upgrade. >> reporter: ceo becker. >> it's not different of what atm machines or easy pass. >> reporter: clear is different from tsa precheck which allows prescreened passengers to go through an expedited screening. but most use full services. how much time do you think it saves you on a busy day? >> 30 plus minutes. >> reporter: 30 minutes? the time savings come at a cost. $179 a year for clear and $85 for five years of tsa precheck.

>> i think it's creating one more break between the upper crust and the hoi polloi, which is not healthy. >> reporter: charley says the services just add to overall traveller frustration. >> i don't mind paying my $85 to the government to go through precheck, however it's a little distasteful when private companies can sort of horn in on a government operation and find a way to make money from it. >> reporter: another concern, all that bimetric data in the hands of a private company. i would think it would be an attractive targ toet to hack. >> we're extraordinarily focussed on the privacy of our members data. it's core to our mission. >> reporter: and he says the potential for it to improve airport security. right now clear is in 13

airports with a goal of 24 by the end of the year. >> that's the overnight news for this friday. for some of you the news continues, for others check back later for the morning news and d it's friday, july 15, 2016. this is the "cbs morning news." mass casualty in france. the terror attack leaves dozens dead in nice when a truck files through a crowded street and the driver opens fire. good morning. this is cbs news headquarters in

new york. good to be with you. i'm meg oliver in for anne-marie green. a scene of horror when