The CHI Hardened images offer a detailed low-level design for configuring the security settings of both operating systems and applications within the AWS Cloud. Our primary objective is to deliver an exceptionally secure and adaptable cloud computing environment, aligning with the security standards established by the U.S. National Checklist Program (NCP). The RedHat8.3 CHI/Linux, specifically, is meticulously designed with a focus on security hardening, which significantly reduces the likelihood of package vulnerabilities, enhances protection against cyber-attacks, and simplifies the process of obtaining compliance certificates.