Serve as a subject matter expert (SME) on Controlled Unclassified Information (CUI) and Classification Management (CNSI) Programs, advising on matters related to sharing, marking, safeguarding, storage, dissemination, declass or decontrol, records management, and destruction, as well as reporting requirements. Technical Integration: Collaborates with DoD CIO, DISA, and JSP to operationalize CUI and marking compliance across NIPR, SIPR, and M365 GCC-High platforms via Microsoft Purview Information Protection (MPIP) sensitivity labeling.