This sources sought notice is restricted to SeaPort NXG MAC holders only and serves as market research for engineering and logistics support services for NUWC Division Keyport, covering integrated product support, training systems, and life-cycle support for undersea warfare systems. The majority of work will be performed within the local commuting area of NUWC Division Keyport, with some services required at various fleet locations throughout the United States. The contemplated task order would be a Cost-Plus-Fixed-Fee award under the SeaPort-NxG IDIQ contract,