"Culture refers to the characteristic attitudes and practices within an organization or society: "it defines the tacit rules that influence actions in a wide variety of situations". Because it is "rooted in a set of values, beliefs, rituals, symbols, and assumptions," it drives many unexamined actions. And because it strongly influences behavior, culture "can affect performance and capability, "and it is thus a strategic concern of those who manage human resources.....To transform the military he [DOD Sec. Donald Rumsfeld] "encourag[ed] a culture of creativity and intelligent risk taking" and asked for "a more entrepreneurial approach to developing military capabilities". (Commission on the National Guard and Reserves, Transforming, 2008, p. 323)