Sedna Digital Solutions LLC*, Manassas, Virginia, is awarded a $13,952,674 cost-plus-fixed-fee and cost contract modification to previously awarded contract N00024-23-C-6109 to exercise options for Navy engineering design, development, and supporting material and travel for sound navigation and ranging systems. Work will be performed in Manassas, Virginia, and is expected to be completed by March 2026. Fiscal 2025 research, development, test and evaluation (Navy) funds in the amount of $1,700,000 will be obligated at time of award and will not expire at the end of the current fiscal year. Naval Sea Systems Command, Washington, D.C., is the contracting activity.