The Sixth Fleet provides ships to NATO Joint Force Command Naples' Operation Active Endeavour, deterring threats to shipping in the Straits of Gibraltar and the remainder of the Mediterranean. Joint Task Force Aztec Silence, a special operations force established under the command of Commander, Sixth Fleet, has been involved in fighting Operation Enduring Freedom - Trans Sahara. It also has a growing role around the shores of West and East Africa, under the direction of United States Africa Command. It previously had a significant Mediterranean presence function against the Soviet Navy's 5th Operational Squadron (Mediterranean Squadron, effectively fleet sized), and for most of the Cold War was the most powerful maritime striking force along NATO's southern flank.