Swiss Air-Rescue is a private, non-profit air rescue service that provides emergency medical assistance in Switzerland and Liechtenstein. Rega was founded on 27 April 1952 by Rudolf Bucher, who believed that the Swiss rescue service needed a specialized air branch. Rega mainly assists in mountain rescues, but also operates in other terrains when necessary, especially in life-threatening emergencies. Rega also provides a repatriation and medical advice service for members who experience a medical emergency while abroad and local treatment is not available.

Zurich Airport is the largest international airport of Switzerland and the principal hub of Swiss International Air Lines. It serves Zürich, Switzerland's largest city, and, with its surface transport links, much of the rest of the country. The airport is located 13 kilometres (8 mi) north of central Zürich, in the municipalities of Kloten, Rümlang, Oberglatt, Winkel, and Opfikon, all of which are within the canton of Zürich.