In BCC operations, what does rekeying refer to during a cyber incident?

• A. Re-issuing cryptographic keys to restore secure communications.
• B. Changing pilot call signs.
• C. Replacing hardware.
• D. Extending the current keys lifetime.

Answer: (B)

In this context, rekeying refers to changing pilot call signs during a cyber incident. The idea is to rotate or assign new radio identities so operators can reliably identify who is transmitting, even if systems are under stress or at risk of spoofing. By updating the visible identifiers, the control center maintains clear, authenticated communications and reduces the chance that an attacker could impersonate a crew member or disrupt coordination.

This approach is a practical, fast-action measure tied to voice and identity on the radio network, which is why it’s the best fit for the term rekeying in this scenario. Re-issuing cryptographic keys would be a different kind of rekeying tied to digital encryption, which isn’t what this item is addressing. Replacing hardware or extending key lifetimes doesn’t capture the operational practice of updating radio identities, which is the focus here.