BAE Systems, Nashua, New Hampshire, is awarded a $13,028,393 modification (P00004) to a previously awarded cost-plus-fixed-fee undefinitized contract (N0001924C0011). This modification definitizes contract line item numbers and adds an option to procure various special tooling and special test equipment in support of production and retrofit modifications for the Joint Strike Fighter aircraft for the Air Force, Marine Corps, Navy, Foreign Military Sales customers, and non-U.S. Department of Defense participants. Work will be performed in Merrimack, New Hampshire, and is expected to be completed in December 2027. Fiscal 2022 aircraft procurement (Navy) funds in the amount of $13,028,393 will be obligated at time of award, $13,028,393 of which will expire at the end of the current fiscal year. Naval Air Systems Command, Patuxent River, Maryland, is the contracting activity.