Complex sentence: Nilsen was assigned to surveil allied military activitity in northern Norway.Bold text The U- 2 operations was linked with the airport Bodø, and had it has one of its permanent stations.
Split into simpler sentences: Nilsen was assigned to surveil allied military activitity in northern Norway. Fjørtoft, Kjel, "Spionfamilien", Gyldendal norsk forlag, 1986, Oslo The U- 2 operations was linked with the airport Bodø, and had it has one of its permanent stations.