You signed an SCI Nondisclosure Statement during the __________________ process.

The signing of an SCI Nondisclosure Statement occurs during the indoctrination process. This procedure is essential as it formally acknowledges an individual's understanding of the responsibilities associated with handling Sensitive Compartmented Information. The indoctrination process includes both a briefing on the nature of SCI and an explanation of the legal and ethical obligations tied to accessing such sensitive information.

By signing the Nondisclosure Statement, individuals commit to protect the integrity of the information and agree to certain consequences should they fail to adhere to these responsibilities. This step is critical in ensuring that individuals are aware of the sensitivity surrounding the information and are legally bound to maintain confidentiality.

Other processes like declassification, briefing, and authorization do not specifically involve the signing of the Nondisclosure Statement. Declassification pertains to the process of removing classified status from information, briefings are informational sessions, and authorization typically refers to granting permission to access certain levels of classified data, rather than the formal acknowledgment of nondisclosure obligations.