Radiance Technologies Inc.,* Huntsville, Alabama, was awarded a $13,169,089 modification (P00007) to exercise an option to previously awarded contract HR0011-20-C-0146 for the Secure Advanced Framework for Simulation and Modeling (SAFE-SiM) program. The modification brings the total cumulative face value of the contract to $23,410,995 from $10,241,906. Work will be performed in Huntsville, Alabama; Cambridge, Massachusetts; Albuquerque, New Mexico; Chantilly, Virginia; San Diego, California; and Rome, New York, with an expected completion date of January 2023. Fiscal 2021 research, development, test and evaluation funds in the amount of $1,500,000 are being obligated at the time of award. The Defense Advanced Research Agency, Arlington, Virginia, is the contracting activity.