The United States Marine Corps is seeking information on capabilities for the maintenance, enhancement, and expansion of its Insider Threat Program Monitoring Tool, which detects insider threats on the Marine Corps Enterprise Network. The contractor would be required to field, operate, enhance, expand, and sustain a comprehensive Insider Threat Monitoring System, including User Activity Monitoring, Behavioral Analytics, and a Case Management System. Responses must be submitted by 10:00 AM EST on 29 May 2026. The anticipated NAICS code is 541512 (Computer Systems Design Services) with a $34.0M size standard, and the work supports the Marine Corps Insider Threat Program. No budget amount is specified, and the location for performance is not mentioned.