Lockheed Martin Aeronautics Co., Fort Worth, Texas, is awarded a $13,449,401 modification (P00010) to a cost-plus-fixed-fee order (N0001923F0039) against a previously issued basic ordering agreement (N0001919G0008). This modification extends the period of performance to provide continued diminishing manufacturing sources (DMS) management to include the ongoing review and identification of actual and potential DMS issues and DMS of components, parts, materials, assemblies, subassemblies, and software items; as well as recommend solutions to mitigate the issues in support of the F-35 Lightning II Joint Program for the Air Force, Marine Corps, Navy, and non-U.S. Department of Defense (DOD) participants. Work will be performed in Fort Worth, Texas, and is expected to be completed in January 2025. Fiscal 2024 aircraft procurement (Air Force) funds in the amount of $5,499,789; fiscal 2024 aircraft procurement (Navy) funds in the amount of $5,499,790; and non-U.S. DOD funds in the amount of $2,449,822, will be obligated at time of award, none of which will expire at the end of the current fiscal year. Naval Air Systems Command, Patuxent River, Maryland, is the contracting activity.