Naval Air Station Sigonella (IATA: NSY, ICAO: LICZ), "The Hub of the Med", is a U.S. Navy installation at NATO Base Sigonella and an Italian Air Force base (Italian: Base aerea di Sigonella) in Sicily, Italy. Although a tenant of the Italian Air Force, NAS Sigonella acts as landlord to more than 40 other U.S. commands and activities. It is located 15 km (8 NM) west and 11 km (6 NM) south of the city of Catania, and some 40 km (22 NM) south of Mount Etna. Because of its location near the center of the Mediterranean Sea, NASSIG is well placed to support operations by the U.S. 6th Fleet, other U.S. military units, and U.S.