I worked at Pilatus Aircraft in the late 1980's, on loan from British Aerospace, to help sort out some PC 9 engine issues that were particularly problematic in high temperature operations. The relationship between Pilatus Aircraft and Pratt and Whitney Canada was pretty fractious and both companies were blaming each other for the main problem. The local P and WC rep had served as aircrew in the USAF during the second world war, if I remember rightly he had been a B17 pilot. When relations between the companies were particularly strained, he used to take great delight in telling us that he had bombed Switzerland during the war. I don't think it had been entirely accidental as there was some suggestion that the Swiss had been supplying the Germans with engineering components, possibly bearings.
Walbut