The Department of Homeland Security defines the Defense Industrial Base as "the worldwide industrial complex that enables research and development, as well as design, production, delivery and maintenance of military weapons systems, subsystems, and components or parts, [emphasis added]. The Defense Industrial Base provides "products and services that are essential to mobilize, deploy, and sustain military operations." Does it include regular commercial services purchased by the US military? No. The definition specifically excludes the purchase of regular commercial services. Whatever makes Google a "key member of the Defense Industrial Base," it is not recruitment campaigns pushed out through Google AdWords or soldiers checking their Gmail.