 Einar worked as chief navigator in the Scandinavian Airlines System (SAS) and was instrumental in developing the airline routes over the North Pole.He envisioned that the airport in Svalbard could serve as an emergency landing aerodrome for intercontinental flights, and proposed that the Norwegian trunk airline service be extended to Svalbard.The brothers went on an expedition to Spitsbergen in 1956 to conduct further surveys.