Second, caring. To quote Teddy Roosevelt, “Nobody cares how much you know, until they know how much you care.” In a family, you watch out for your younger brother. You’re interested in him—how he grows, how he learns, who he wants to be. When your Marines know you care about them, then you can speak bluntly when they disappoint you. They are young, but they did volunteer for the Marines, so don’t patronize them. They know they’re not in a life insurance company. Be honest in your criticism, but blow away the bad behavior while leaving their manhood intact.