Modus21, LLC is a small business founded in 2004, headquartered in Charleston, SC. We provide Software Development, Systems Engineering & Integration, Model Based Systems Engineering, DevSecOps, Cloud Computing, Cybersecurity, and Data Analytics services. We've worked with the DoD and civil agencies since 2007, as well as with NIWC since 2008. We provide our services and capabilities to the US Navy, USMC, USAF, and VA, supporting ACAT I-III programs and C4I & C4ISR efforts.