chad hurley saying praying for my friends at youtube. that's what he tweeted so many people have responded to his tweets with thoughts, prayers, well wishes, condolences that something this tragic has happened at the place he and two friends founded back in 2005 and proceeded to sell one year later to google for an astronomical 1$1.6 billion. this was the frontier of the silicon valley revolution. youtube is one of the defining names of some of the innovation in the valley. for this to happen here at home in silicon valley at the heart of it has been stunning for everyone in the industry. tim cook of apple tweeted condolences. it's been reverberating throughout the valley. >> another step under way right now is to help these employees deal with this on an individual level. you know youtube will be bringing in counselors, offering some mental health screening. some assistance, some counseling. clearly there is a huge ordeal to go through for each and every one of these employees. as i said before, you can't help but wonder whether they wi

. >>> a little background, youtube was founded in 2005 by chad hurley and steve chatten. >> it was locatedbove a pizza restaurant. google then bought the company in 2006 when it only had 65 employees. >> the current san bruno location has 1,100 staff members. >>> before they were there were five deadly has shootings in the bay area in the last 30 years. in 1988, gunman richard wade farley farley killed 7 people and 4 were wounded. in 19 -- this shooting with us the catalyst for the 1994 assault weapons ban that was offered by senator dianne feinstein. >> in october of 2011, three people were killed and six wounded. the shooter opened fire with a handgun during a meeting at the plant. a few months later, april 2, 2012, a gunman shot seven people at the oikos university in oakland, seven were killed and three others wounded. >>> now president trump says he's considering sending the military to the border. today's comments follow an administration effort to craft a legislature package aimed at closing legislation loopholes. >> without his promised border wall, the president, frustrated. >> we