The Boeing Co., Huntington Beach, California, is awarded an $11,595,326 cost-plus-fixed-fee modification to previously awarded contract (N00024-17-C-6307) to exercise options for engineering support services in support of the Extra Large Unmanned Undersea Vehicle (XLUUV) program. Work will be performed in Huntington Beach, California (55%), East Greenwich, Rhode Island (15%), Herndon, Virginia (15%), Cockeysville, Maryland (10%), and Joplin, Missouri (5%), and is expected to be completed by September 2023. Fiscal 2022 research, development, test and evaluation (Navy) in the amount of $1,507,957 will be obligated at time of award and will not expire at the end of the current fiscal year. The Naval Sea Systems Command, Washington, District of Columbia, is the contracting activity.