Sikorsky Aircraft Corp., a Lockheed Martin Co., Stratford, Connecticut, is awarded a $73,221,421 modification (P00008) to firm-fixed-price order N00019-21-F-0434 against previously issued basic ordering agreement N00019-19-G-0029. This modification adds scope to procure 362 spare parts and support required for the repair and maintenance of the CH-53K low rate initial production configuration aircraft. Work will be performed in Stratford, Connecticut (35.34%); Stamford, Connecticut (8.83%); Quebec, Canada (7.22%); Seattle, Washington (4.23%); Pottsville, Pennsylvania (2.86%); Slough, United Kingdom (2.64%); Jackson, Mississippi (2.55%); Cudahy, Wisconsin (2.08%); Windsor Locks, Connecticut (1.96%); Los Angeles, California (1.87%); Stratford, Canada (1.47%); Cromwell, Connecticut (1.43%); Enfield, Connecticut (1.25%); Lindenhurst, New York (1.23%); Creston, Iowa (1.15%); Grapevine, Texas (1.06%); Waltham, Massachusetts (1.06%); various locations within the continental U.S. (21.09%); and various locations outside the continental U.S. (0.68%), and is expected to be completed in December 2026. Fiscal 2021 aircraft procurement (Navy) funds in the amount of $73,221,421 will be obligated at the 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. (Awarded June 18, 2021)