General Dynamics NASSCO, San Diego, California, is awarded a not-to-exceed $438,524,107 cost-plus-fixed-fee modification to a previously awarded undefinitized contract action (N0002423C4424) for the maintenance, modernization, and repair of USS Chung-Hoon (DDG 93) and USS James E. Williams (DDG 95) fiscal 2024 Depot Maintenance Period availabilities. The scope of this acquisition includes all labor, materials, supervision, equipment, production, testing, facilities, and quality assurance necessary to prepare for and accomplish the Chief of Naval Operations Availabilities for critical modernization, maintenance and repair programs. This contract includes options, which, if exercised, would bring the cumulative value of this contract to $864,141,048. If all options are exercised, work will continue through November 2030. Work will be performed in Norfolk, Virginia (53%); and San Diego, California (47%), and is expected to be completed by April 2024. This undefinitized contract action obligates a total of $185,946,619 to include: fiscal 2024 other procurement, Navy funds in the amount of $156,691,537 (84.3%); fiscal 2024 operations and maintenance, Navy funds in the amount of $19,603,435 (10.5%); fiscal 2023 other procurement, Navy funds in the amount of $9,564,027 (5.1%); and fiscal 2023 defense-wide, procurement funds in the amount of $87,584 (0.1%), will be obligated at the time of award, of which $18,987,166 will expire at the end of the current fiscal year. Naval Sea Systems Command, Washington, D.C., is the contracting activity.