What type of submissions must the SAO make if TEMPEST security measures are needed?

The correct response involves making submissions to a certified TEMPEST technical authority (CTTA) when TEMPEST security measures are required. This is due to the specialized nature of TEMPEST security, which is aimed at protecting against electronic eavesdropping and compromising emanations from electronic equipment. A CTTA possesses the necessary expertise and certification to evaluate, assess, and advise on the implementation of these security measures effectively.

By submitting plans to a CTTA, organizations ensure that they are following the proper protocols and standards that specifically address the nuances of TEMPEST, which can include aspects like physical security, shielding, and equipment configuration tailored to mitigate risks of surveillance through emanations. The guidance from the CTTA is crucial for ensuring compliance with governmental regulations regarding sensitive information and national security.

The other options, while they might involve appropriate channels for different types of security or recommendations, do not specifically pertain to the unique requirements and processes concerning TEMPEST measures. Therefore, working with a CTTA is essential for ensuring that the security measures implemented are both effective and compliant with necessary standards.