Final answer:
If the TSA issues an initial notification of threat assessment against a certificate holder, it means that the TSA has identified a potential threat or risk and will initiate further investigation. The certificate holder may face additional security measures or restrictions, such as special permission to fly on commercial flights. Cooperation with the TSA's investigation is crucial.
Step-by-step explanation:
If the TSA has issued an initial notification of threat assessment against a certificate holder, it means that the TSA has identified a potential threat or risk associated with the individual or organization holding the certificate. This notification is typically given to notify the certificate holder of the TSA's concern and initiate further investigation.
As a result, the TSA may impose additional security measures or restrictions on the certificate holder's activities, such as requiring special permission to fly on commercial flights or subjecting them to enhanced screening procedures at airports.
It's important for the certificate holder to cooperate with the TSA's investigation and comply with any requirements or instructions given to address the identified threat or risk.