Review and analyze A&A packages-including System Security Plans (SSP), Risk Assessments, Information System Contingency Plans (ISCP), Backup SOPs, Incident Response Plans (IRP), Configuration Management Plans (CMP), hardware/software inventories, network diagrams, data flows, system change requests, vulnerability scan reports, test reports, and POA&Ms-for completeness, accuracy, and effective control implementation. Develop and maintain test cases for control-level security testing across system components (applications, servers, databases, operating systems, network devices, end-user devices, etc.).