Sikorsky Aircraft Corp., a Lockheed Martin Co., Stratford, Connecticut, is awarded a not-to-exceed $232,452,366 firm-fixed-price modification (P00002) to a previously awarded contract (N0001924C0009). This modification exercises an option to procure additional long-lead time materials to support full rate production, Lot 10, of the CH-53K aircraft for the Marine Corps. Work will be performed in Stratford, Connecticut, and is expected to be completed in March 2026. Fiscal 2025 aircraft procurement (Navy) funds in the amount of $232,452,366 will be obligated at the time of award, none of which will expire at the end of the current fiscal year. This modification was not competed. Naval Air Systems Command, Patuxent River, Maryland, is the contracting activity.