 With Allied and Axis aircraft freely overflying Switzerland, over 7,000 siren alarms were initiated in Switzerland during the war.Some Allied bombers took advantage of this situation by using Swiss airspace as a safer route than enemy air space on their bombing runs to and from targets in Germany, but more often, bombers in distress preferred to descend to neutral Switzerland for asylum rather than in German territory.As a result, Switzerland ultimately interned 1,700 American airmen.