Northrop Grumman Systems Corp., Charlottesville, Virginia, is awarded a $15,336,718 firm-fixed-price modification to previously-awarded contract N00024-19-C-4101 to exercise options for Integrated Bridge and Navigation System (IBNS) shipsets and to procure IBNS spares for continued hardware support of DDG 51-class ship construction and modernization. Work will be performed in Charlottesville, Virginia, and is expected to be completed by September 2022. Fiscal 2021 other procurement (Navy) funds in the amount of $8,964,228 (58%); fiscal 2021 shipbuilding and conversion (Navy) funds in the amount of $4,573,529 (30%); and fiscal 2018 shipbuilding and conversion (Navy) funds in the amount of $1,798,962 (12%) funding 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, D.C., is the contracting activity.