D. L. Martin Co.,* Mercersburg, Pennsylvania (N64498-25-D-0006); Epsilon Systems Solutions Inc.*, Portsmouth, Virginia (N64498-25-D-0007); and GSE Dynamics Inc.,* Hauppauge, New York (N64498-25-D-0008), are awarded a combined $10,010,610 firm-fixed-price, indefinite-delivery/indefinite-quantity contract for inspection, repair, restoration, and testing services for naval submarine antenna, periscope, and communications masts and hull mechanical and electrical systems. Each awardee will be awarded $891 (meeting the $500 minimum contract guarantee per awardee) at contract award. Work will be completed at the contractor's facilities in Mercersburg, Pennsylvania; Portsmouth, Virginia; and Hauppauge, New York, according to future contracting actions. Work is expected to be completed by October 2030. Fiscal 2023 shipbuilding and conversion, (Navy) funds in the amount of $2,673 will be obligated at time of award and will not expire at the end of the current fiscal year. This contract was competitively procured via the System for Award Management website, with four offers received. The Naval Surface Warfare Center, Philadelphia Division, Philadelphia, Pennsylvania, is the contracting activity.