Raytheon Co., Raytheon Missiles & Defense, Tewksbury, Massachusetts, is awarded a $482,714,279 cost-plus-incentive-fee, cost-plus-fixed-fee, cost-only, and firm-fixed-price contract for DDG 1000 Class Combat System activation, sustainment and modernization support for Mission Systems and Total Ship Computing Environment infrastructure (TSCEi) hardware/equipment, in addition to non-recurring engineering services supporting combat system installation, integration, development, testing, correction, maintenance, and modernization of Zumwalt-class Mission Systems and Mission System equipment. This contract includes options, which if exercised, would bring the cumulative value of this contract to $1,675,745,280. Work will be performed in Tewksbury, Massachusetts (37%); Portsmouth, Rhode Island (37%); San Diego, California (22%); Nashua, New Hampshire (2%); Pascagoula, Mississippi (1%); and Fort Wayne, Indiana (1%), and is expected to be completed by April 2023. If all options are exercised, work will continue through April 2027. Fiscal 2022 other procurement (Navy) funds in the amount of $5,100,000 (34%); fiscal 2022 shipbuilding and conversion (Navy) funds in the amount of $4,000,000 (26%); fiscal 2022 operations and maintenance (Navy) funds in the amount of $3,209,388 (22%); fiscal 2022 research, development, test and evaluation (Navy) funds in the amount of $2,610,000 (17%); and fiscal 2021 research, development, test and evaluation (Navy) funds in the amount of $216,000 (1%) will be obligated at time of award, of which $3,425,388 will expire at the end of the current fiscal year. This contract was not competitively procured in accordance with 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 (N00024-22-C-5522).