Campbeltown Airport (Scottish Gaelic: Port-adhair Cheann Loch Chille Chiarain) (IATA: CAL, ICAO: EGEC) is located at Machrihanish, 3 nautical miles (5.6 km; 3.5 mi) west of Campbeltown, near the tip of the Kintyre peninsula in Argyll and Bute on the west coast of Scotland. The airport was formerly known as RAF Machrihanish (after the village of Machrihanish) and hosted squadrons of the Royal Air Force and other NATO air forces as well as the United States Marine Corps. The airport is at a strategic point near the Irish Sea, and was used to guard the entrance to the Firth of Clyde where US nuclear submarines were based at Holy Loch and where Royal Navy Trident missile submarines are still based at HMNB Clyde (Faslane Naval Base).