This is a Sources Sought/RFI for planning and market research only, issued by NSWC Crane on behalf of the NAVSEA BBG(X) Program Office (PMS 470). The requirement is for Professional Support Services across five task areas, including logistics, program management, and financial management, to be performed under the SeaPort-NxG MAC. The Government is considering a potential Cost-Plus-Fixed-Fee contract with a one-year base period and four option years, with an estimated total level of effort of 54 FTEs per year. The performance location is not specified. Responses are only being accepted from SeaPort-NxG MAC holders and must be submitted electronically to the specified email contacts.