Huntington-Ingalls Industries, Pocasset, Massachusetts, is awarded a $17,294,036 modification to previously awarded, indefinite-delivery/indefinite-quantity contract N00174-19-D-0010 to exercise Option Year Three for engineering support and training services for the MK 18 Family of Systems (FOS) – Unmanned Underwater Vehicle (UUV) systems. The work will be performed in Pocasset, Massachusetts, and is expected to be completed by September 2024. No additional funds are being obligated under this action. The Naval Surface Warfare Center Indian Head Division, Indian Head, Maryland, is the contracting activity.