there was a very very dynamic president of the war college named harris lanning. in the early 1920's, he was a student. it occurred to him that lessons an amplifiedd be and kept as becker. the then president that set of the modern war college was impressed enough to make him head of tactics. you find lanning writing about each major game he sees in detail saying, this is a really .ood thing the things he notices and set in real life. is this find that you can defend your carrier if you have enough fighters. whoever's in charge of the american fighters makes a special effort to refuel them, but he cannot get the refueled fast enough to move them on the carrier fast enough. a manficer, i think, was named reeves, and if not, reeves was certainly engaged, and he became head of tactics. that is how we learn to operate carriers at very high capacity. effortone would make the worth the price of admission. anyway, it 1930, he comes back as president. he's very impressed by the fact that people do find the games and lessons interesting. he decides to institutionalize it. h

harris's golden buzzer. >> right. >> and the ventriloquist is mar lan wayans golden buzzer. amazing music, contortionists and everything. all live. we only keep seven to move onto the semifinals. >> it's tight. how many are you getting rid of tonight? >> five. if there are 12 performing and seven left, you do the math at home. >> exactly. >> or on periscope like right now. >> right now. >> i don't think you have made a prediction yet who you think will take it all. >> because this is the tenth anniversary season and i don't know if it is because it is an anniversary season but we stepped it up. this is bigger, better talent than ever. this is my first year in the six years i have been there that i cannot call it. >> really? >> i have no idea. >> it's not like you to be so shy and retiring. >> i am. it will be up to america. you have the hardest vote because ultimately we turn it over to you. i don't have to do anything but show up and periscope. >> do you love the live shows? you must wait all season for this. >> you know, i lo the show. this is my favorite job i have had st

lan start his venture in the eastern united states, then he came to philadelphia. >> we're very disappointed. >> hitchbot survived by his parent canadian creators doctor searle and doctor harristhis point -- >> hitchbot was designed as a social experiment to appear child like, defenseless going from one social interaction to another, dependent on the care of humans and the kindness of strangers to get across the country. >> we just pick up a hitchhiking robot. so weird. >> it was supposed to test the human spirit. and at some point late friday night along the oldest street in philadelphia, we failed that test. the image after dismember robot slain in philly has now gone viral. >> i think we just got to leave him. >> video positive popular youtube personality catches his final hours. but creators say this is not indictment on the city of brotherly love. >> this could have happened anywhere. >> yes, absolutely. we don't really think it has anything to do with philadelphia. >> and they say don't grieve. hitch's demise is all part of the experiment creating its own social date a fitting maybe that the end after global journey happened in what many consider the birth place of the