Which of the following is an example of a "special" tactical call sign?

A "special" tactical call sign is typically assigned to individuals or units that hold a specific significance or role within a military or tactical framework. The call sign "Avenging Spirit" reflects a unique identity that embodies a certain operational context, mission, or personal characteristic, making it an example of a special call sign.

Such call signs are often chosen to inspire or convey a particular message or ethos, distinguishing them from standard tactical call signs, which are usually more generic or functional in nature. In this case, the name evokes a sense of mission-focused energy and is likely intended to enhance morale or signify a unique operational area or capability.

Other choices represent more standard or generic titles that may not carry the same unique connotations or specialized significance associated with a "special" tactical call sign. For instance, titles like "Commander" and "Chief of Staff" are ranks or roles within a military structure, while "Richmond" does not convey the tactical or thematic resonance that characterizes a special call sign. Thus, "Avenging Spirit" stands out as the most fitting representation of a "special" tactical call sign.