Sikorsky Aircraft Corp., a Lockheed Martin Co., Stratford, Connecticut, is awarded a not-to-exceed $280,946,361 firm-fixed-price modification (P00004) to a previously awarded contract (N0001922C0004). This modification exercises an option to procure long lead items in support of full rate production Lot 8, CH-53K aircraft. Work will be performed in Stratford, Connecticut, and is expected to be completed in December 2023. Fiscal 2023 aircraft procurement (Navy) funds in the amount of $230,000,000 and Foreign Military Sales customer funds in the amount of $50,946,361 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, Maryland, is the contracting activity.