Which one of the following reflects an action that must occur immediately according to security protocols?

Reporting lost or stolen KCM (Known Crewmember) barcode cards is a critical action that must be taken immediately according to security protocols. These cards are essential for granting authorized personnel faster access through security checkpoints and ensuring the safety and integrity of the airport environment. If a card is lost or stolen, it poses a potential security risk; unauthorized individuals could gain access to secure areas.

Immediate reporting of a lost or stolen KCM card helps initiate the process to deactivate the card, preventing any unauthorized use. This action is vital for maintaining security integrity and protecting sensitive areas from potential breaches.

The other actions listed, while important, do not carry the same immediacy in terms of security risk. Filling out a behavioral report may be necessary, but it can typically wait until the immediate threat is contained. Alerting TSA before boarding may be part of standard protocol, but it doesn’t involve the same level of urgency as addressing a lost security credential. Notifying fellow staff members, while important for communication, doesn’t equate to the immediate actions needed to mitigate a security risk from a lost access card.