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The Naval Special Warfare Development Group (formerly known as MOB 6, SEAL Team SIX, and MARESFAC) based at Dam Neck, Virginia, is responsible for U.S. counterterrorist operations in the maritime environment. Its origin can be traced to the aftermath of the failed 1980 attempted to rescue American hostages at the Iranian Embassy (Operation Eagle Claw). Prior to this, the SEALs had already begun CT training, including all 12 platoons in SEAL Team One on the West Coast. On the East Coast, however, elements of the SEAL Team Two had taken the issue one step farther. They formed a dedicated two-platoon group known as "MOB Six" (short for Mobility Six) in anticipation of a maritime scenario requiring a CT response and had begun training (including the development of advanced tactics such as "fast roping") to that end. Yet, as was the case with the US Army's initial CT unit - Blue Light - and Delta Force, only one group was needed and could be recognized as official. With the formal creation of SEAL Team Six (a name selected primarily to confuse Soviet intelligence as to the number of SEAL Teams in operation) in October1980, MOB Six was demobilized. A large number of members, however, including the former MOB Six commander, were asked to join the fledgling group. With prior experience from these operators, aggressive leadership, and an accelerated training program, SEAL Team Six was declared mission-ready just six months later.