This is a market research notice seeking capability statements from firms able to provide technical engineering services and equipment for new construction support of the Fleet Ballistic Missile Underwater Launcher Subsystem. The Period of Performance is set to begin in Fiscal Year 2026. Work will be performed primarily in Sunnyvale, California; Baltimore, MD; Kings Bay, GA; Groton, CT; and Quonset Point, RI. Respondents must demonstrate extensive, documented expertise in specific TRIDENT II ULS specifications, installation, nuclear safety, and possess a qualified manufacturing facility. The notice strongly encourages responses from capable small businesses and outlines detailed requirements for submitting a comprehensive White Paper capability statement.