Security Chief

Security Chief is a title which refers to the head of a security department for a business firm, government agency, space agency or branch of the armed services. The Security Chief is in charge of maintaining peace, order and lawful conduct within his jurisdiction and is supported by a staff of trained guards.

In the continuity of the Star Trek franchise, the Security Chief of a starship usually doubles as the ship's tactical officer. Notable starship officers who have held the rank of Security Chief include Malcolm Reed from Star Trek: Enterprise, Tuvok from Star Trek: Voyager and Tasha Yar and Worf, both from Star Trek: The Next Generation. On Star Trek: Deep Space Nine, the Changeling known as Odo was the Security Chief of the station, but his title was Chief Constable.

Characters
The following includes a list of fictional characters who have held the rank of (incomplete).