joining me today on this edition of "studio 1.0," greylock partners david sze and john lilly. david, you have been at the firm for 15 years? >> 16. emily: john, you put greylock on the map in silicon valley. how did you do that? john: it was a partnership effort. we both take some credit, but it is a team effort. in the early 2000's, we made a move to say every partner should have an operating background. that allows us to connect better to entrepreneurs, to build companies. emily: john, you were the ceo of mozilla. you started your career as a scientist at apple? john: that mostly means i didn't ship code at apple. i was doing experiments around the edges. emily: why greylock? john: i wouldn't want to work at most firms. emily: why not? guest: i like people who make things. everyone at greylock valued making products. it is characteristic of david to enter the question like, no, it was everybody else. emily: you did find facebook and linkedin. you convinced reid hoffman to join the firm. how did you do that? how do you do that? john: again, it comes down to -- we believe if yo

joining me today on this edition of "studio 1.0," greylock partners david sze and john lilly. ave been at the firm for 15 years?

"world news with david muir" is next i'm kristen sze. >> i'm dan ashley. all of us, we appreciate your time. we'll see you again at 6. >>> as we come on, we have just learned an ef-4 tornado, winds up to 180 miles per hour, a half-mile wide, on the ground for 90 minutes. also tonight, the school children sheltering in place. and passengers at the airport held in garage tunnels amid new watches and warnings at this hour. >>> also breaking tonight, the stunning new images from the nypd moments ago. the deadly shooting. a man opening fire at a concert in new york city. several hit. >>> the race for the white house tonight. donald trump hits the magic number. what he needs to lock in the nomination. also tonight, his $10 million challenge. will he debate bernie sanders? >>> there are also breaking developments involving the secret service tonight. word coming in now that 41 agents have been disciplined amid a widening scandal.

. >> "world news with david muir" is up next. i'm kristen sze. >> i'm dan ashley.ou again in a half hour. >> bye-bye. >>> several breaking stories as we come on. a state of emergency just declared. another tornado touching down late today. the pictures coming in now, as the tornado emergency now turns deadly. >> oh, my god. >> more than 20 reported twisters across seven states. homes destroyed. >> that's a tree! >> the new warnings right now for millions as we're on the air. >>> also breaking, the primary results coming in right now as we come on in the west. amid that battleground bombshell tonight. the new polls tonight in key battleground states. donald trump closing in on hillary clinton. and the trump headline breaking now. did his campaign choose a well-known white supremacist as a delegatdelegate? new action on that front, as well. >>> and the abc news exclusive tonight, joe biden.

. >> "world news with david muir" is coming up next. i'm kristen sze. >> i'm dan ashley.we appreciate your time and we'll see you again in half an hour. >> bye-bye. >>> tonight, the high stakes meeting. who's the boss? donald trump or paul ryan? new details coming in from inside their face-to-face meeting. what both said afterward. plus trump tonight, and what he's now saying about his proposed muslim ban. >>> late today, the two officers now suspended after this moment. a chase, the driver crawling out of the car. and what happened next. was it excessive force? >>> outrage tonight. george zimmerman now selling the gun he used to kill trayvon martin. just a short time ago, putting it back on the auction block. >>> breaking developments about the two boys lost at sea and that iphone found on their boat. >>> and the new statement just in tonight from joan rivers' daughter about her mother's death.

>> "world news tonight with david muir" is coming up next. i'm kristen sze. >>> just as we come on tonight, as millions now travel, the tropical storm warning just issued. will it hit the coast this holiday? >>> also tonight, the other system. severe storms across several states at this hour. two dead, several others missing. swept away in the flash floods. >>> also at this hour, the heavy security tonight. hundreds of protesters gathering with donald trump near the u.s./mexico border. the motorcade barreling through a police barricade. and tonight, trump suddenly pulling his offer to debate bernie sanders. sanders firing back moments ago. >>> the deadly police confrontation, under investigation. the officer jumping on the hood, firing through the windshield. >>> the air scare. the passenger jet. the engine going up in flames. hundreds of passengers rushing from the plane. >>> the new headline tonight about cancer and your cell phone. >>> and, "america strong." the new images tonight from the top of the world. can you guess our person of the week? >>> good e

. >> "world news tonight with david muir" is coming up next. i'm kristen sze. >> i'm dan ashley. for all of us, we appreciate your time. hope to see you again at 6. >> bye-bye. >>> as we come on the air tonight, the tornado watch just issued. and authorities say the next 48 hours will be dangerous. the tornado ripping this home apart. at least 30 reported twisters across several states. from texas to minnesota, and the big change in the east. >>> the rampage on an american highway. four hours of terror. the gunman targeting multiple drivers, one car igniting. we're on the scene at this hour. >>> the race for the white house. and the fights breaking out at a trump event. >> go home to mommy. >> late today, authorities sending in heavy security. and the scathing new report on hillary clinton and her e-mail. >>> the alarming moment on this flight. the passenger at the cockpit door, and what she said. and the flight crew credited with staying calm. >>> and the american city plunging into darkness today.

. >> "world news tonight with david muir" is coming up next. i'm kristen sze. >> i'm dan ashley.appreciate your time. see you again at 6. >> bye-bye. >>> breaking news tonight. what we have just learned about the crash of flight 804. the passenger plane vanishing from radar. the two signals picked up on radar right before it disappeared. and tonight, inside the investigation. was it terror? brian ross on the reported plots to get bombs onto planes, in laptops, even in a soda can. >>> and this evening, heightened security at american airports. what this means for millions of american travelers. >>> donald trump unloading his most personal attack yet against bill clinton. and tonight, hillary clinton responds, and she says trump is not qualified to be president. >>> the officer charged after a brutal confrontation with a female driver. he said he pulled her over for a missed turn signal. what does the surveillance show? >>> the overpass collapse in a major american city.

. >> "world news tonight with david muir" is coming up next. i'm kristen sze>>> just as we come on tonight, as millions now travel, the tropical storm warning just issued. will it hit the coast this holiday? >>> also tonight, the other system. severe storms across several states at this hour. two dead, several others missing. swept away in the flash floods. >>> also at this hour, the heavy security tonight. hundreds of protesters gathering with donald trump near the u.s./mexico border. the motorcade barreling through a police barricade. and tonight, trump suddenly pulling his offer to debate bernie sanders. sanders firing back moments ago. >>> the deadly police confrontation, under investigation. the officer jumping on the hood, firing through the windshield. >>> the air scare. the passenger jet. the engine going up in flames. hundreds of passengers rushing from the plane. >>> the new headline tonight about cancer and your cell phone.

"world news tonight with david muir" is coming up next. i'm kristen sze the deer has seen the light evidently. i'm dan ashley. appreciate your time. we'll see you again at 6. >> we've got more time. couple more jokes? >> no. i'm out. >> see you later. bye-bye. >>> breaking news tonight. the toxic inferno. a major american city battling exploding fireballs, dangerous smoke and flames. thousands were told to shelter in place. we're on the scene tonight. >>> and the state of emergency north of the border. the stunning new images coming in tonight. an entire city in flames. neighbors trying to get out. the fire now larger than new york city. >>> the emergency landing late today. a plane hitting major turbulence. several passengers injured amid images of another flight, slamming into rough air. >>> donald trump tonight. the tweet with his taco bowl, saying, "i love hispanics." and the list of names refusing to go to the republican convention. there is also breaking news tonight involving hillary clinton's top aide. >>> and the urgent manhunt for a

. >> "world news with david muir" is coming up next. i'm kristen sze. >> i'm dan ashley. all of us here, we appreciate your time. you'll get live pictures of hillary clinton making her way across the bay bridge into san francisco. >> have a good night. we >>> tonight, the deadly shooting spree. we're on the scene right now. 24 hours of terror, across three cities. and the images just released. the dramatic takedown, ramming into his car. a law enforcement officer accused of opening fire outside two shopping malls and at his children's schools. >>> also, these images coming in at this hour. the camera inside this home, capturing the flames breaking through. an entire city up in flames. authorities now saying it's out of control. >>> we also have donald trump one-on-one tonight, and we ask, what does he make of paul ryan not supporting him? and the former presidents that say they won't go to the convention. his new response tonight. >>> extreme storms hitting both coasts at this hour.