Raytheon Missiles & Defense, Tewksbury, Massachusetts, is awarded a $9,503,770 firm-fixed-price and cost modification to previously awarded contract N00024-17-C-5145 to exercise options for the fiscal 21 DDG 1000 Class Diminishing Manufacturing Sources and Material Shortages (DMSMS) tech refresh life type buy requirement. Work will be performed in Portsmouth, Rhode Island (90%); and Tewksbury, Massachusetts (10%), and is expected to be completed by June 2023. Fiscal 2022 other procurement (Navy) funds in the amount of $9,503,770 will be obligated at time of award and will not expire at the end of the current fiscal year. This contract was procured under the statutory authority of 10 U.S. Code 2304(c)(1) — only one responsible source and no other supplies or services will satisfy agency requirements. The Naval Sea Systems Command, Washington, D.C., is the contracting activity.