 We often talk about culture in the military as ubiquitous, when in fact it is more accurate to acknowledge that service culture can be an accumulation of subcultures. In the Navy, we have cultures within each of our warfare communities of ship drivers, submarineers, aviators, and many more. Each community would say that their culture is unique and they're right. How do we understand culture? One model is presented in Daniel Coyle's book, Culture Code. He describes three skills common to the most successful cultures he studied. Build safety, share vulnerability, and establish purpose. Coyle quotes a Harvard study of 200 businesses that said a strong culture increases net income 756 percent. What do you know about your group's culture? It might be worth digging into. Lead well this week.