Marinette Marine Corp., Marinette, Wisconsin, is awarded a $9,026,423 firm-fixed-price modification to previously awarded contract N00024-20-C-2300 to exercise an option for bridge and central control station equipment training stations in support of detail design and construction of the Constellation-class guided-missile frigate. Work will be performed in Marinette, Wisconsin, and is expected to be completed by October 2025. Fiscal 2021 shipbuilding and conversion (Navy) funding in the amount of $9,026,423 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.