Rockwell Collins, Inc., Cedar Rapids, Iowa, is awarded a $16,200,976 cost modification (P00048) to a previously awarded firm-fixed-price, cost-plus-incentive-fee contract (N6134017C0007). This modification provides Synthetic Inject To Live (SITL) stage one, in continuation of SITL stage zero, for the design, testing and implementation of software features associated with the SITL capability into the Tactical Combat Training System (TCTS) II software configuration. These efforts are in support of developing upgraded software to enhance interface capabilities between the TCTS II and the F/A-18E/F and EA-18G platforms for the Navy. Work will be performed in Cedar Rapids, Iowa (55%); China Lake, California (15%); Fallon, Nevada (15%); Patuxent River, Maryland (10%); and Ft. Walton Beach, Florida (5%), and is expected to be completed in February 2025. Fiscal 2023 research, development, test and evaluation (Navy) funds in the amount of $5,547,955 will be obligated at the time of award, none of which will expire at the end of the current fiscal year. Naval Air Warfare Center Training Systems Division, Orlando, Florida, is the contracting activity.