The DOD of course has a long history of jump-starting innovation. Historically, it has taken the megafunding and top-down control structures of the federal government to do the kind of investing required to create important technology for the military. Digital photography, GPS, the Internet itself—all were nourished by defense contracts before being opened up to the private sector, which then turned them into billion-dollar industries. ... Now the flow has reversed. Defense has been caught in the throes of the same upheaval that has disrupted legacy industries, unseated politicians, and upended global dynamics. In the digital age, innovation more often comes from smaller entrepreneurs than from the hierarchical structures that were the hallmark of 20th-century government and business. ... Defense contracting is notorious for bureaucratic lethargy and technological backwardness. And executives are leery of appearing to be too close to the US government while they seek to expand overseas. Put bluntly, they don’t want to alienate potential customers. ... The Valley is a place where brainpower is its own kind of currency, and Carter, who holds a PhD in theoretical physics from Oxford, made an impression on the locals. ... somehow Carter must instill the seeds of a cultural and logistical overhaul that will make the modern military-industrial complex nimble enough to provide the kind of innovation and support its 21st-century fighting force needs.