The Unit is an American action-drama television series that focuses on a top-secret military unit modeled after the real-life U.S. Army special operations unit commonly known as Delta Force.
The Unit's members frequently use code names such as Snake Doctor, Dirt Diver, Betty Blue, Cool Breeze, and Hammer Head, as well as colors (Mr. White, Green, Blue, Black). These are usually used when working directly with American civilians, other English speakers not trained for emergencies, or on counter-terrorism missions. According to Jonas Blane, the order of precedence for his team after he is disabled, is, from top to bottom: Mack Gerhardt, Charles Grey, Hector Williams, and Bob Brown based on seniority.
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