Answer :
Final answer:
The Commanding Officer is responsible for the operation of all command Sensitive Compartmented Information Facilities (SCIFs), but daily management may be delegated to other roles under their authority.
Explanation:
The individual responsible for the operation, including security, control, and use, of all command Sensitive Compartmented Information Facilities (SCIFs) is typically the Commanding Officer. Within the hierarchy of responsibility, the Commanding Officer bears ultimate responsibility for the SCIFs.
However, in practical terms, the day-to-day operations may be overseen by personnel such as the Security Manager, SCIF Custodian, or Communication Security (COMSEC) Officer, who are responsible for various aspects under the direction of the Commanding Officer.