This is a Sources Sought Notice for market research to identify capable firms for engineering and technical services supporting Trident II missile programs, facility operations, and flight test support. The performance period includes a base year from October 1, 2026, to September 30, 2027, plus four one-year options. Services will be performed on-site at the Washington Navy Yard, requiring 29 Full-Time Equivalent personnel. Respondents must demonstrate recent and relevant experience performing similar efforts with an annual incurred cost of at least $8.5 million. This is not a solicitation, and no proposals are being requested or accepted.