This is a sources sought notice for enterprise-wide pre-deployment training and exercise support services for the Marine Corps Forces Special Operations Command (MARFORSOC). The required services, which include personnel, materials, program management, and instruction, must be performed simultaneously at various geographically dispersed training sites throughout the Continental United States, its outlying areas, and abroad. Interested contractors must have an existing SECRET facility clearance and safeguarding capability at the time of proposal and performance, as MARFORSOC will not sponsor vendors. Companies are to submit a tailored capabilities statement addressing specific experience and financial questions, with all responses forwarded to a designated unclassified email address. This notice is for planning purposes only and is not a request for proposals.