SEATTLE, Wash. (July 3) ---Members of the Coast Guard's Port Security Unit-313 are in formation as part of the Marine Safety and Security Unit commissioning. MSSTs are domestic mobile units that possess specialized training capabilities to perform a wide spectrum of port safety and security operations. They are modeled after the Coast Guard's Port Security Units (PSUs) and Law Enforcement Detachments (LEDETs). MSSTs are being establised to protect military load-outs; enforce security zones; defend critical waterside facilities in strategic ports; stop illegal activities, such as narcotics trafficking or illegal migrants; and provide a modest level of shore side protection. USCG photo by PA2 Sarah Foster-Snell