After meeting with Defense Secretary Ash Carter to talk cybersecurity, Marc Andreessen, co-founder of Andreessen Horowitz, discussed Silicon Valley's relationship with Washington with Bloomberg's Emily Chang at the Moffett Federal Airfield/NSA Ames Research Center on Friday. After meeting with Defense Secretary Ash Carter to talk cybersecurity, Marc Andreessen, co-founder of Andreessen Horowitz, discussed market volatility in China and Twitter's search for a new CEO with Bloomberg's Emily Chang at the Moffett Federal Airfield/NSA Ames Research Center on Friday.