SCI couriers must be appointed in writing.

• A. In writing
• B. Verbally
• C. By random assignment
• D. By collective agreement

Answer: (A)

Appointing SCI couriers in writing creates an official, auditable designation of who is trusted to move sensitive material. A written appointment identifies the individual, spells out their duties and the security requirements they must follow, and records the authority behind their role. This documentation supports accountability because it shows exactly who held the courier responsibility at any time and provides a basis to revoke or adjust the appointment if needed. It also strengthens the chain of custody by ensuring there is a clear, verifiable record of who was authorized to handle and transport SCI material.

Verbal assignments lack a durable record, making it difficult to prove who was authorized or to demonstrate adherence to procedures during an incident or audit. Random assignment ignores qualifications and trust, which are crucial for safeguarding SCI. Collective agreement does not create a specific, accountable designation for an individual, which is necessary for proper oversight and accountability.