so. >> this is exo's headquarters where the magic is made and perfected.people who are paralyzed a chance to do what they have been told was impossible. >> i feel like the luckiest man alive. >> nathan is one of the robot's inventers. not build for the are meat feed but for the credit military field. >> there's a huge problem in the field for soldiers carrying the large loads, in fact they want to carry more. we were helping to develop exoskeletons. to carry the person's weight and more as well. >> it can be powered by a small battery pack and then there's that whole walking thing. >> it takes over the function of the muscles in your legs. it can do that either completely, for a person who's completely paralyzed, or partially for someone who is rethroarng walk, like someone who -- credit relearning to walk, like someone who has just had a stroke. >> i put the device in walk-mode and take the first right step and as i move my body the exo will move with me. if i don't move to the any next position the exo stops. >> test pilots like amanda boxtel and jason g

. >> we see them as exo planets, but what if to them we are an exo planet and they are having this discussion on blue eye. it is a planet outside of ours. it is their world and we are rotating around another galaxy. they are thinking of eating us. >> they probably have better taste than we do. they probably look at us and say we don't want it. andy, that could be interesting. they are aware of who we are, but they have no interest in coming near us. do they get our messages? they are getting them, but they are not answering. we are like jehovah's witnesses. >> they are not taking our calls . >> we will get back to you. >> i find this sad because i know i will not livelong enough to get to one of these planets to get away from people. that makes me sad. th is something i am sick of. scientists say, well these planets may have liquid water which is necessary for life. how do they know? in the vast universe is there life where maybe they don't need water? in the movie water killed aliens. >> and remember the movie where country music killed them? >> that's my point, we just don't know. >> what a

and that's why i call it an exo sen shall threat. if 50% of mothers across the country realise what those impacts do, and tell their kids "you can play any sport except tackle football", it won't kill football, it changes the socioeconomics so the people who play football will be like the people who box. the irony is at the absolute apex of power with the country n.f.l. crazy about 2:1, top rated shows, we have this lurking threat. we need dramatically to move on helmets. the counter helmets products against skull fracture. >> sports is a dog eat dog world. bit on a lot of backstabbing. the bigger you become the bigger target you have: what happened to leigh steinberg, how did it go from a peak to pretty much crumb bling? >> in the year 2000 a huge merger mania hit the sport industry. the concept was to buy up and bundle practices in football, baseball, boxing, and then you use them to trigger a marketing arm that could market teams, leagues, any interesting individual corporations. and then build a studio not in the brick and more t