Lockheed Martin Corp., Lockheed Martin Aeronautics Co., Fort Worth, Texas, is awarded a $23,792,332 cost-plus-fixed-fee modification (P00767) to a previously awarded contract (N0001902C3002). This modification adds scope to provide support required to implement, integrate, test, and support accreditation of the F-35 in-a-box model and its required interfaces for use in the joint simulation environment. Development and support to integrate the models are required to fulfill operational test and evaluation goals and objectives to validate F-35 Block 3F capabilities in support of the Navy, Marine Corps and Air Force. Work will be performed in Fort Worth (85%); and Patuxent River, Md. (15%), and is expected to be completed in July 2023. Fiscal 2022 research, development, test and evaluation (Navy) funds in the amount of $4,000,000; and fiscal 2022 research, development, test and evaluation (Air Force) funds in the amount of $685,858 will be obligated at time of award, none of which will expire at the end of the current fiscal year. The Naval Air Systems Command, Patuxent River is the contracting activity. (Source: DoD, 12/22/21) Gulf Coast note: Eglin Air Force Base, Fla., is home of an F-35 training center and reprogramming labs.