What must non-US citizens have to access the NATEC website?

Non-US citizens must have CNO approved waivers on file to access the NATEC website because this requirement is put in place to ensure compliance with security protocols and regulations regarding sensitive information. The Chief of Naval Operations (CNO) maintains oversight on access to systems that might contain classified or sensitive data, and waivers are necessary to document approval for non-citizens.

This approach safeguards the information within the NATEC website, which is crucial for naval operations and ensures only those who have undergone the proper vetting processes can gain access. Other choices, while they may seem relevant, do not specifically address the requirement for non-citizens in the context of accessing this particular system.