Tenet 3 LLC,* Dayton, Ohio, has been awarded a $24,900,000 ceiling indefinite-delivery/indefinite-quantity, cost-plus-fixed-fee Small Business Innovation Research Phase III contract for Assured System Security Engineering and Trustworthy Solutions research. This contract provides for research, development, a prototype, and deployment of the assurance technologies for systems of systems security engineering, lifecycle assurance, and trustworthiness assessments of complex systems at risk. Work will be performed in Dayton, Ohio, and is expected to be complete by May 13, 2025. This award is the result of a competitive acquisition and three offers were received. Fiscal 2018 research and development funds in the amount of $2,385,500 are being obligated on the first task order at the time of award. Air Force Research Lab, Sensors Contracting Branch, Wright-Patterson Air Force Base, Ohio is the contracting activity (FA8650-18-D-1610).