Marine Security Forces

Marine Security Forces (MSF) are specialized units within the United States Marine Corps tasked with providing security at critical naval installations and assets worldwide. Established during the Cold War era, these forces were initially formed to safeguard strategic resources, including nuclear weapons and key command centers. Over the decades, their role expanded to include counterterrorism, anti-sabotage, and rapid response to security threats. Today, Marine Security Forces are recognized for their rigorous training and are deployed globally to protect vital interests of the U.S. Navy and Marine Corps.