 Eager to bring supplies to Trondheim, he and Sørli soon decided to transport propaganda material, handguns and explosives to the Norwegian border.After finding a lost resistance member in the mountains, Gjems-Onstad joined a course in Alby near Stockholm where he worked as instructor in "silent killing" for a month.He went for a short mission to Trondheim in July in order to insert Egil Løkse as Lark's new radio operator there.