Switzerland. Canton Ticino. Locarno Airport LSZL. The Rega base’s official name is Locarno LSMO AFB (Rega 6). By using a rescue hoist, a helicopter can rescue persons from hard-to-reach areas in the Alps. Once a month, the emergency doctors working for Rega have to train the various winch evacuation proceedings. In order to get their flying clearances, they need to pass the test successfully. The physician Michele Musiari (C) is exercising an evacuation with a patient lying in a horizontal net. The net is used with patients injured with serious backs problems. The Rega pilot Corrado Sasselli plays the role of the patient. In the background, a Rega Agusta AW109 SP Grand "Da Vinci" helicopter. All Rega helicopters carry a crew of three: a pilot, an emergency physician, and a paramedic who is also trained to assist the pilot for radio communication, navigation, terrain/object avoidance, and winch operations. The name Rega was created by combining letters from the name "Swiss Air Rescue Guard" as it was written in German (Schweizerische Rettungsflugwacht), French (Garde Aérienne Suisse de Sauvetage), and Italian (Guardia Aerea Svizzera di Soccorso). Rega is a private, non-profit air rescue service that provides emergency medical assistance in Switzerland. Rega mainly assists with mountain rescues, though it will also operate in other terrains when needed, most notably during life-threatening emergencies. As a non-profit foundation, Rega does not receive financial assistance from any government. The AgustaWestland AW109 is a lightweight, twin-engine, helicopter built by the Italian manufacturer Leonardo S.p.A. (formerly AgustaWestland, Leonardo-Finmeccanica and Finmeccanica). Leonardo S.p.A is an Italian global high-tech company and one of the key players in aerospace. In close collaboration with the manufacturer, the Da Vinci has been specially designed to cater for Rega's particular requirements as regards carrying out operations in the mountains. It optimally fulfil