Naval Special Warfare Development Group. SEAL Team 6 / Six. Special Mission Unit / SMU. Condition: Unused, and in nice shape. The coin is 1 3/4 inches in diameter with 5 squadron w/EOD insignia on flip side. Special mission units are commanded and controlled by Joint Special Operations Command. In addition to performing highly classified activities the special mission units are also tasked with “special missions”, sometimes referring to unconventional warfare. So far, only four SMUs have been publicly disclosed. S 1st Special Forces Operational Detachment – Delta. S 75th Ranger Regiment. S Naval Special Warfare Development Group. S 24th Special Tactics Squadron. Units from the Army’s 75th Ranger Regiment. And 160th Special Operations Aviation Regiment. (160th SOAR) are controlled by JSOC when deployed as part of JSOC Task Forces such as Task Force 121. And Task Force 145. The Intelligence Support Activity. (ISA) is also under JSOC and has been referred to as a special mission unit. The ISA collects specific target intelligence prior to SMU missions, and provides signals support, etc. The Army once maintained the ISA, but after the September 11 attacks. Shifted direct control to Joint Special Operations Command at Fort Bragg, NC. NOTE: Never personally given any of the coins. All coins are guaranteed to be in excellent condition unless specified above. The free listing tool.