Final answer:
The officer in charge of the CDU usually makes the final decision regarding removal from the unit, although the Chief of Police has overall personnel authority.
Step-by-step explanation:
The final decision on whether an individual can be removed from the Criminal Detection Unit (CDU) typically falls to the officer in charge of the CDU. While the Chief of Police may retain overarching authority on personnel matters, specifics of assignment and removal from specialized units like the CDU are usually handled by the unit's leadership. This means an officer looking to be reassigned would need to request a change from the CDU command, and such a request would be evaluated based on unit policy, individual performance, and organizational need.