This assignment delves into the critical topic of risk assessment within maximum-security environments. It examines several key methodologies, including what-if analysis, checklists, hazard and operability study (HAZOP), failure mode and effect analysis (FMEA), and fault tree analysis (FTA). The paper explains how these techniques can be applied to identify potential threats, vulnerabilities, and security gaps in high-level protection systems. It also highlights the importance of combining these methods for a comprehensive and effective risk management strategy.